{"title":"Alieno","description":null,"products":[{"product_id":"alieno-line-stage-preamplifier-mkii-ecc82-6h30-twin-chassis-with-lithium-battery-power-supply","title":"Alieno Line Stage Preamplifier MKII (ECC82-6H30), twin chassis with lithium battery power supply","description":"\u003cp\u003eAfter decades of creating exquisite audio equipment and pushing the boundaries of audio design, Fulvio Chiappetta started the Alieno line of ultra high-end amplifiers. The 6H30 line stage preamplifier is beyond no compromise. It features innovations and unique design applications that can only be described as extreme engineering. Utilising ECC82-6H30 tubes, it is a twin chassis design with the signal circuitry in one chassis and the power supply in another, connected by a thick umbilical cable. The power supply operates new generation lithium batteries, providing perfect, discreet noise-free polarisation of the individual preamplifier stages.\u003c\/p\u003e\n\u003cp\u003eIt features two sets of balanced and single-ended outputs. The inputs have variable sensitivity and each input \u0026amp; output is individually and independently grounded! This technology offers completely distortion-free signal handling, rendering the common use of feedback obsolete. Aside from the zero-feedback topology, a minimal-crystal clear distortion-free signal path exists from the inputs to the outputs. Much engineering effort and cost has gone into creating this signal path and as a result, this preamplifier’s transparency is astronomical.\u003c\/p\u003e\n\u003cp\u003eSonically, the Alieno 6H30 preamplifier is a revelation. If you have an opportunity to experience its capabilities and virtues, it will make even the most reputed and expensive preamplifiers in the world sound coloured. Seasoned audiophiles often lament that the world’s best performing equipment is not the domain of the well-known high-end brands with the serious marketing budgets. Ultimate level equipment is usually the realm of the small, low volume handmade boutique brands which are masterpiece achievements by genius designers and left-field thinkers. Alieno is a great example of this observation and has become a favourite of the connoisseurs and cognoscenti.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno_PreAmplifier.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical Grounding\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe electrical grounding system within this preamplifier is unique and engineered to a level without precedence. All the grounds of each input\/output are independent and separate, even within the same channel between the left and right signal. This is a very complex solution to manufacture, however it guarantees the very best possible signal-to-noise ratio, which means a deeper and more silent background of the sound image (noise floor) and the sound appears to rise from pure silence and be ‘painted’ on a ‘deep black canvas’. The sound is palpably sharper, more detailed and three-dimensional.\u003c\/p\u003e\n\u003cp\u003eThis strategy is implemented with high quality precision relays for each channel. Each time an input is switched, the input is muted for about 5 seconds before enabling the new selected input. During this slight delay in switching between one input and another, a further advantage of this technology is the fact that the preamplifier circuits ‘see’ only the selected input, because all the other inputs (even if connected with cables to many sources) are in fact electrically ‘off’, not having their ground reference.\u003c\/p\u003e\n\u003cp\u003eFor this reason, none of the unselected inputs can transfer any type of electrical disturbances to the Alieno Preamplifier, which often originate from the grounds (generally all in common) and enter the circuit in the form of hum (typical ground loops). Furthermore, the condition of electrically ‘seeing’ only the selected input allows the Alieno Preamplifier to immediately identify any source that has any unwanted internal disturbances or interferences.\u003c\/p\u003e\n\u003cp\u003eIn the Alieno Preamplifier, the unselected inputs are NOT short-circuited (as is the case with many preamplifier designs that suffer from crosstalk) because that condition could be harmful to many of the latest generation digital sources which supply output electrical signals that do not tolerate an encounter with a short circuit when entering a preamplifier. There is also the option to have a dedicated input for pro sources with a floating balanced connection.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno_PreAmplifier_rear.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVolume Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe implementation of the volume control is absolutely critical in terms of the sound quality of a preamplifier and by inference, the whole system. Typically, volume controls are made by a variable resistor which controls the signal in transit. The most adopted techniques in high-end audio are either the potentiometer (a variable resistor based on a sliding contact), or a series of fixed value resistors. The Alieno Preamplifier implements a unique technology which encompasses a step-free behaviour (like a potentiometer), coupled with the superior sonic transparency of fixed value resistors. To the user, it feels like a traditional volume control.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply \u0026amp; Virtual Battery Mode\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAlieno have implemented an exclusive power supply technology that makes a significant contribution to the sound of the preamplifier. Using a discrete dual mono topology, the Alieno Preamplifier employs four independent power supply units, not including the power supplies exclusively dedicated to cathodes and services. This ensures a fully shielded independent power supply to each the amplification stages. Moreover, each PSU acts in a ‘virtual battery mode’ thanks to the use of special capacitors whose value and topology have never been used before in amplifier applications.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno_PreAmplifier_power_supply.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003eThis technology allows the Alieno Preamplifier to work as if it was battery powered and therefore disconnected from the mains power. This de-couples the preamplifier from any electrical harmonics, disturbances and irregularities typically found in domestic mains power supply. A series of high quality heavy capacitors takes care of this task, but to get this ‘virtual power supply’ fully operational, the capacitors need a few minutes to reach their complete polarisation and electrical potential, so it is advisable to turn on an ALIENO Preamplifier and give it at least twenty minutes of low volume playing before embarking on ‘in-depth’ listening, regardless of the temperature of the listening room. Of course, you can listen to it right away, but after that warm-up period the ALIENO Preamplifier is in its best thermal\/electrical condition.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno_PreAmplifier_power_supply_rear.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e2 Levels of Attenuation For The Inputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eEach input has a selector that allows you to set two attenuation levels for the input signal: – 8 dB and – 16 dB. The components involved for applying these two levels of attenuation are absolutely transparent to the sound, therefore, dynamics, transparency and timbre of the input signal are absolutely preserved and intact as in the zero attenuation position. This solution has been implemented in the ALIENO Preamplifier to cater for sources with diversified electrical output levels. For example, some of the latest generation DACs or digital players have output signals over 5V RMS. By having the option of two attenuation levels, the ALIENO Preamplifier allows the user to maintain a more homogeneous volume position, even when the connected sources have important differences between their electrical output levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 6H30 Tube\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOne of the two pairs of tubes used in the ALIENO Preamplifier is the 6H30 (the other pair is the ECC82). This tube is acclaimed in the audio design field for the purity of its sound. After around a 500 hour break in period, the 6H30 rewards the listener with natural tonality and wonderful realism. In the ALIENO Preamplifier, it is only used at approx. 30% of its electrical limit so it is not stressed and will deliver thousands of hours of reliable service.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Monumental Achievement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno Preamplifier is a no-holes-barred attempt at making the world’s best preamplifier. It is uncompromising in its design and incorporates multiple exclusive technologies and topologies to create a once-a-generation heirloom piece. The extensive grounding system and the innovative power supply system alone accounts for a large portion of its cost. Putting aside it’s unique design and no-expense spared build quality, it is simply one of the best sounding preamplifiers ever created. It is sonically transparent to the source and facilitates nothing but the music. The preamp is the heart and soul of the system and in this case, it has taken one man 30 years to develop and then hand-build a rare piece of audiophile utopia. There is evidence of engineering genius all over the Alieno and once you experience it, you forget everything you thought you knew. Heavenly.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno_PreAmplifier_1.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno_PreAmplifier_2.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVideos\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUltimate Audio presents Alieno Pre\/power and Ideon Absolute Dac\u003cbr\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/_dJmZlveT9c\" width=\"300\" height=\"150\"\u003e\u0026lt;span\n style=\"display: inline-block; width: 0px; overflow: hidden;\nline-height: 0;\" data-mce-type=\"bookmark\"\nclass=\"mce_SELRES_start\"\u0026gt;\u0026lt;\/span\u0026gt;\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003eMarten Parker Quintet + Alieno Pre\/Power JVH audition\u003cbr\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/3DbNkAtsJdg\" width=\"300\" height=\"150\"\u003e\u0026lt;span\n style=\"display: inline-block; width: 0px; overflow: hidden;\nline-height: 0;\" data-mce-type=\"bookmark\"\nclass=\"mce_SELRES_start\"\u0026gt;\u0026lt;\/span\u0026gt;\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDocuments\/Links\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.acusticaapplicata.com\/alieno_pre_amplifier.php?lang=en\"\u003eManufacturer’s Website\u003c\/a\u003e\u003c\/p\u003e","brand":"Alieno","offers":[{"title":"Default Title","offer_id":51889707614529,"sku":"ACU-ALIENO-PRE-2","price":122000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/2636\/1921\/files\/AlienoLineStagePreamplifierMKII_ECC82-6H30_twinchassiswithlithiumbattery1.jpg?v=1782562898"},{"product_id":"alieno-100-ltd-otl-ocl-2a3-tube-100w-stereo-power-amplifier","title":"Alieno 100 LTD OTL-OCL 2A3 Tube 100W Stereo Power Amplifier","description":"\u003cp\u003eWith the same innovative technology used for the progenitor ALIENO 250 LTD, also ALIENO 100 LTD is the first and unique tube amplifier with two 2A3s that delivers 100 Watts per channel.\u003c\/p\u003e\n\u003cp\u003eALIENO 100 LTD is an OTL-OCL (Output Transformer Less \u0026amp; Output Capacitor Less), Single Ended, pure Class A. ALIENO 100 LTD \u003cu\u003eis not\u003c\/u\u003e a hybrid tube \u0026amp; transistor amplifier.\u003c\/p\u003e\n\u003cp\u003eThe LTD exclusive “Loudspeaker Tube Direct” technology allows the tubes to be used exclusively for the amplifier circuits, while the transistors are used exclusively for the power supply and protection circuits. No hybrid tube\/transistor sound!\u003c\/p\u003e\n\u003cp\u003eIn addition to the two 2A3 amplifier tubes, ALIENO 100 LTD differs from the more powerful ALIENO 250 LTD for the single cabinet that contains both the power supply and the amplifier sections. For all the other choices of circuits and components, ALIENO 100 LTD adopts the same “no compromise” construction philosophy of ALIENO 250 LTD.\u003c\/p\u003e\n\u003cp\u003eThis extraordinary amplification system is virtually the definition of extreme high-end audio. Audio engineer \u0026amp; inventor Fulvio Chiappetta conceived the theoretically perfect amplification system but his ideas were considered impossible to implement. What he wanted to achieve had never been done before – design an amplification system with the purity, refinement and emotional communication of a single ended triode design however with the power to drive any real-world speaker without the use of an output transformer, a hybrid design or a solid-state device in the signal path. Many designers in the history of audio have tried to achieve this ‘Holy Grail’ type of amplifier but it was deemed impossible. After 30 years of experimentation \u0026amp; development, Fulvio unveiled his Alieno amplification system, which consists of a preamplifier and a choice of two power amplifiers. The audiophile world is still trying to make sense of his achievement and the lucky few who have heard the Alieno sound are saying it’s genre redefining.\u003c\/p\u003e\n\u003cp\u003eThe Alieno 100 LTD was launched at the Rome Hi-Fidelity Show in November 2021 and follows in the footsteps of the acclaimed 250 LTD. Whereas the 250 LTD is a twin chassis design that uses a pair of 300B tubes to produce 250W, the 100 LTD is a single chassis stereo power amplifier that uses two 2A3 tubes to produce 100W.\u003c\/p\u003e\n\u003cp\u003eTo be frank, these two power amplifiers are ground-breaking products that have no equal. There is simply nothing else in the world that has this technology or can deliver this performance. They are the first and only amplifiers in the world using an OTL-OCL (Output Transformer Less \u0026amp; Output Capacitor Less) Single Ended, pure Class A topology delivering high power. They are not hybrid tube\/transistor amplifiers.\u003c\/p\u003e\n\u003cp\u003eAt this point, you cannot be blamed for thinking “Impossible, this is some kind of marketing hype!”. Spend a moment listening to this amplifier and you will realise that 30 years of uncompromising development has yielded something very special. The secret here is the proprietary LTD technology (Loudspeaker Tube Direct) which allows the use of tubes exclusively for amplification circuitry with transistors used exclusively for power supply and protection circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEliminating Output Transformers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOutput transformers are used in most tube power amplifier designs and have a significant influence on the sound which is why so many high-end designs place a lot of emphasis on the quality of this transformer. When listening to OTL (Output Transformer Less) designs which have eliminated the output transformer, you can hear the absence of the transformer (however traditional OTL designs have other issues).\u003c\/p\u003e\n\u003cp\u003eWhen a signal moves through an output transformer, it is converted into a magnetic field and subsequently\u003cbr\u003ere-converted back into an electrical signal. These two transformations result in a degradation of the signal which is heard as a loss of purity and immediacy in the sound. Eliminating the output transformer from the signal path is therefore extremely important if you are searching for ultimate transparency. In its absence, the true sound of tubes can be expressed in all their fullness. In fact, some of the flaws generally attributed to tubes, such as slowness, lack of impact \u0026amp; poor low frequency control, are to a large extent caused by the output transformer, not the tubes themselves.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/12\/Alieno-100-LTD-power-amplifier-top.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSingle-Ended Triode Circuitry\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSingle Ended Triode (SET) circuitry is renowned for its magical musicality and notorious for its lack of power. The ideal amplifier for purity and clarity should combine the positive qualities of single-ended outputs with the elimination of an output transformer. It should also have sufficient output power to drive any reasonable load.\u003c\/p\u003e\n\u003cp\u003eThese desires were Fulvio’s motivation for inventing the innovative circuitry of the LTD design. Output power comes from the power tube, while supplies to the load (voltage \u0026amp; current) are supported by Alieno’s unique semiconductor power supply process (current).\u003c\/p\u003e\n\u003cp\u003eNot a Traditional Hybrid Design\u003c\/p\u003e\n\u003cp\u003eThe Alieno LTD technology differs profoundly from traditional circuits defined as ‘hybrid´ which in addition to the output tubes, also include the use of transistors. In a hybrid system, after voltage amplification by the tubes stages, the signal is then delivered to the solid-state section for current amplification.\u003c\/p\u003e\n\u003cp\u003eIn hybrid designs, the tube is tasked with increasing the signal voltage only, but not its current. This generates a partial, but important, loss of the tube signature on the sound. This precious purity and tonal structure are the desirable aspects of single-ended sound which must not be lost if aiming at ultimate sound quality. The ‘magic’ of tube sound is thus only partially expressed in hybrid designs, since only the voltage modulation supplied to the loudspeaker has those tube qualities while the current supply adds the signature typical of transistors.\u003c\/p\u003e\n\u003cp\u003eFurthermore, if we consider that although quantitatively inadequate to the direct driving of a speaker, the current supplied from a tube (not modified by the transformer´s influence) is at its core excellent for speed, impact and modulation, the ‘perfect amplifier’ would be designed with the ability to preserve 100% of these virtues and deliver them unchanged to the speaker connectors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFuss-Free Tube Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno 100 LTD delivers a practical, stable, reliable and fuss-free ownership experience. There is no requirement for manual bias regulation thanks to the ingenious electronic circuit management of the KT150 tubes. All parameters are constantly optimised over the entire operating life of the tubes. In addition to the security and consistency of a system which is always perfectly fine-tuned regardless of electrical grid conditions and power tube aging, the control circuits allow “Tube Rolling” without worrying about bias regulation.\u003c\/p\u003e\n\u003cp\u003eAnother significant advantage for users is the extended longevity of 2A3 power tubes. This design places very little stress on the tubes and they will last well beyond their typically rated five thousand hours. Balances between various sections of the circuit are intrinsically managed and ensured through active circuitry and precise passive components selected for their sonic purity. There are no trimmers to adjust and no negative feedback – just the purity of the original tube sound.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/12\/Alieno-100-LTD-power-amplifier-front.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the 100 LTD \u0026amp; the 250 LTD?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno LTD technology is at the heart of what makes these amplifiers unique and special. It allows the full sound of the power tube to come through, un-manipulated by output transformers \u0026amp; complex circuitry while producing enough power to drive real world speakers. The 100 LTD is not a cheaper alternative to the 250 LTD – it is simply another interpretation of the LTD technology with a different tube.\u003c\/p\u003e\n\u003cp\u003eThe 300B is undoubtably renowned for its sonic attributes. Interestingly, if you ask experienced audiophiles and tube aficionados to name the most musical tube they have ever heard, many also nominate the 2A3. However, due to the very low power output of this tube, 2A3 SET amplifiers are only used with extremely high sensitivity speakers (horns). After the success of the 250 LTD, Alieno decided to design an interpretation of the LTD circuit specifically for the 2A3 tube and the result is quite stunning.\u003c\/p\u003e\n\u003cp\u003eThe Alieno 100 LTD has a clear, transparent and dynamic sound just like the 250 LTD. Tonally, it can be described as very refined, graceful, charming….sophisticated. It has an immediacy that places the listener in the front row of the concert hall, giving the experience of a personal intimacy between the listener and the artist.\u003c\/p\u003e\n\u003cp\u003eWith 100W available, it can drive speakers with mid-high efficiency beautifully and even low efficiency speakers in smaller rooms. If you require the ability to drive low efficiency speakers with headroom, speakers with challenging impedance profiles, need to achieve high sound pressure levels or are using a large room, the 250 LTD is recommended as a more suitable choice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Monumental Achievement!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno 100 LTD is uncompromising in its design and incorporates multiple exclusive technologies and topologies to create a once-a-generation heirloom piece. The SET topology, lack of output transformer, lack of any solid-state device in the signal path and 100W of power giving the owner the freedom to choose from many speakers are not just rare attributes – this is the ONLY amplifier in the world which can do this. To do this with the exquisite sound of the 2A3 tube is a dream come true for many audiophiles.\u003c\/p\u003e\n\u003cp\u003ePutting aside its unique design and no-expense spared build quality, when combined with the Alieno Preamplifier it is simply one of the best sounding stereo amplification systems ever created. It is sonically transparent to the source and facilitates nothing but the music. It has taken one man 30 years to develop and then hand-build a rare piece of audiophile utopia. There is evidence of engineering genius all over the Alieno 100 LTD and once you experience it, you forget everything you thought you knew. Considering how much money audiophiles spend over a lifetime of trying different amplifiers, the Alieno is a revelation. Meet THE destination amp. Sublime emotional connection.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/12\/Alieno-100-LTD-power-amplifier.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e100 W RMS continuous per channel @ 3 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDistortion (THD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eTypically 0.1%, max 0.5% (20 Hz – 20 kHz)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e±0.5 dB from 5 Hz to 100,000 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Bandwidth\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 1 MHz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e22 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Sensitivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2.5 Vrms\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e100 kΩ (irrelevant capacitance)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Connectors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRCA, XLR\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimal Load Impedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2–8 Ω\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSignal-to-Noise Ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 95 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 60\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNegative Feedback\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNone (zero NFB design)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSlew Rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 200 V\/µs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 55 A peak per channel\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTubes Required (per channel)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e1 × ECC82 (preamp\/driver), 1 × KT150 (stabilizer), 1 × 2A3 (power output tube)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAutomatic optimization of tube parameters (bias, voltage, current), real-time impedance management, auto compensation for mismatch and tube aging\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProtection Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIndependent thermal protection per channel; main AC fuse + 5 PSU fuses; PSU\/amp connection protection; dual-stage AC load soft-start; per-protection LED indicators; delayed start to eliminate “thump”; full loudspeaker protection\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (W × D × H)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e45 × 50 × 33 cm • 17.7″ × 19.7″ × 13″\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e45 kg • 99 lb\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDocuments\/Links\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.acusticaapplicata.com\/alieno_pre_amplifier.php?lang=en\"\u003eManufacturer’s Website\u003c\/a\u003e\u003c\/p\u003e","brand":"Alieno","offers":[{"title":"Default Title","offer_id":51889729208641,"sku":"ACU-ALIENO-100","price":86500.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/2636\/1921\/files\/Alieno100LTDOTL-OCL2A3Tube100WStereoPowerAmplifier1_df4c3767-6f20-4532-b658-79be260dc438.jpg?v=1782563969"},{"product_id":"alieno-150-120-ltd-otl-ocl-3ab-150w-or-2a3-120w-tube-stereo-power-amplifier","title":"Alieno 150\/120 LTD OTL-OCL 3AB (150W) or 2A3 (120W) Tube Stereo Power Amplifier","description":"\u003cp\u003eSame characteristics of ALIENO 100, but ALIENO 150-120 can use the two most famous direct heating triode tubes at the user’s choice: the 300B to deliver 150 Watts per channel, or the 2A3 to deliver 120 Watts per channel.\u003c\/p\u003e\n\u003cp\u003eIn addition to the power supplied, this amplifier also modifies its sonic characteristics respecting the type of tube used.\u003cbr\u003eA double display on the front panel shows the type of tube installed, to confirm to the user that ALIENO has simply and automatically adapted all the parameters for the chosen tubes, avoiding the need for external modifications or the use of any tools.\u003c\/p\u003e\n\u003cp\u003eOptimal load impedance 2 – 8 Ohm. XLR and RCA input connectors.\u003cbr\u003eLike all ALIENO amplifiers, the 150-120 also uses the proprietary LTD (Loudspeaker Tube Direct) technology, in pure Class A, OTL-OCL and totally absent negative feedback.\u003cbr\u003eLike all ALIENO amplifiers, the 150-120 also uses the proprietary LTD (Loudspeaker Tube Direct) technology, in pure Class A, OTL-OCL and totally absent feedback.\u003c\/p\u003e","brand":"Alieno","offers":[{"title":"Default Title","offer_id":51889735434561,"sku":"ACU-ALIENO-150-120","price":112000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/2636\/1921\/files\/Alieno150120LTD1.jpg?v=1782564662"},{"product_id":"alieno-250-ltd-mk2-otl-ocl-300b-tube-250w-stereo-power-amplifier","title":"Alieno 250 LTD Mk2 OTL-OCL 300B Tube 250W Stereo Power Amplifier","description":"\u003cp\u003eThe first tube amplifier utilizing two 300Bs generating 250 Watts per channel.\u003c\/p\u003e\n\u003cp\u003eALIENO is an OTL-OCL (Output Transformer Less \u0026amp; Output Capacitor Less), Single Ended, pure Class A amplifier.\u003cbr\u003eALIENO is NOT a hybrid tube\/transistor amplifier.\u003cbr\u003eThis innovative LTD “Loudspeaker Tube Direct” technology allows the use of tubes \u003cu\u003eexclusively\u003c\/u\u003e for amplification circuitry, with transistors used exclusively for power supply and protection circuits.\u003c\/p\u003e\n\u003cp\u003eThis extraordinary amplification system is virtually the definition of extreme high-end audio. Audio engineer \u0026amp; inventor Fulvio Chiappetta conceived the theoretically perfect amplification system but his ideas were considered impossible to implement. What he wanted to achieve had never been done before – design an amplification system with the purity, refinement and emotional communication of a single ended triode design however with the power to drive any real-world speaker without the use of an output transformer, a hybrid design or a solid-state device in the signal path. Many designers in the history of audio have tried to achieve this ‘Holy Grail’ type of amplifier but it was deemed impossible. After 30 years of experimentation \u0026amp; development, Fulvio unveiled his Alieno amplification system, which consists of a preamplifier and a choice of two power amplifiers. The audiophile world is still trying to make sense of his achievement and the lucky few who have heard the Alieno sound are saying it’s genre redefining.\u003c\/p\u003e\n\u003cp\u003eThe Alieno 250 LTD is frankly a ground-breaking product that has no peer. There is simply nothing else in the world that has this technology or can deliver this performance. It is the first and only amplifier in the world utilising two 300B tubes generating 250W per channel. It is an OTL-OCL (Output Transformer Less \u0026amp; Output Capacitor Less) Single Ended, pure Class A amplifier. It is not a hybrid tube\/transistor amplifier.\u003c\/p\u003e\n\u003cp\u003eAt this point, you cannot be blamed for thinking “Impossible, this is some kind of marketing hype!”. Spend a moment listening to this amplifier and you will realise that 30 years of uncompromising development has yielded something very special. The secret here is the proprietary LTD technology (Loudspeaker Tube Direct) which allows the use of tubes exclusively for amplification circuitry with transistors used exclusively for power supply and protection circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno-250LTD.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEliminating Output Transformers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOutput transformers are used in most tube power amplifier designs and have a significant influence on the sound which is why so many high-end designs place a lot of emphasis on the quality of this transformer. When listening to OTL (Output Transformer Less) designs which have eliminated the output transformer, you can hear the absence of the transformer (however traditional OTL designs have other issues).\u003c\/p\u003e\n\u003cp\u003eWhen a signal moves through an output transformer, it is converted into a magnetic field and subsequently\u003cbr\u003ere-converted back into an electrical signal. These two transformations result in a degradation of the signal which is heard as a loss of purity and immediacy in the sound. Eliminating the output transformer from the signal path is therefore extremely important if you are searching for ultimate transparency. In its absence, the true sound of tubes can be expressed in all their fullness. In fact, some of the flaws generally attributed to tubes, such as slowness, lack of impact \u0026amp; poor low frequency control, are to a large extent caused by the output transformer, not the tubes themselves.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSingle-Ended Triode Circuitry\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSingle Ended Triode (SET) circuitry is renowned for its magical musicality and notorious for its lack of power. The ideal amplifier for purity and clarity should combine the positive qualities of single-ended outputs with the elimination of an output transformer. It should also have sufficient output power to drive any reasonable load.\u003c\/p\u003e\n\u003cp\u003eThese desires were Fulvio’s motivation for inventing the innovative circuitry of the LTD design. Output power comes from the power tube, while supplies to the load (voltage \u0026amp; current) are supported by Alieno’s unique semiconductor power supply process (current). With 250W per channel and generous amounts of current, the Alieno 250 LTD ensures authoritative control of speakers in any dynamic range, precisely tracking the complex impedance load demands of even the most difficult to drive loudspeakers, allowing the full freedom to choose their typology.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno-250LTD-front.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNot a Traditional Hybrid Design\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno LTD technology differs profoundly from traditional circuits defined as ‘hybrid´ which in addition to the output tubes, also include the use of transistors. In a hybrid system, after voltage amplification by the tubes stages, the signal is then delivered to the solid-state section for current amplification.\u003c\/p\u003e\n\u003cp\u003eIn hybrid designs, the tube is tasked with increasing the signal voltage only, but not its current. This generates a partial, but important, loss of the tube signature on the sound. This precious purity and tonal structure are the desirable aspects of single-ended sound which must not be lost if aiming at ultimate sound quality. The ‘magic’ of tube sound is thus only partially expressed in hybrid designs, since only the voltage modulation supplied to the loudspeaker has those tube qualities while the current supply adds the signature typical of transistors.\u003c\/p\u003e\n\u003cp\u003eFurthermore, if we consider that although quantitatively inadequate to the direct driving of a speaker, the current supplied from a tube (not modified by the transformer´s influence) is at its core excellent for speed, impact and modulation, the ‘perfect amplifier’ would be designed with the ability to preserve 100% of these virtues and deliver them unchanged to the speaker connectors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAllowing an Unlimited Choice of Speakers\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno 250 LTD can drive any speaker, including the brands and models that are considered to be the most difficult speakers to match with an amplifier. With a damping factor that exceeds one hundred and a managed output current of approximately 200A, Alieno have created an output power capability that is enviable even for a transistor amplifier, let alone a single ended tube output stage. All this with NO negative feedback. Audiophiles who wish to enjoy the ultimate immediacy and purity of the Single Ended Triode sound quality are no longer restricted to a small selection of high efficiency speakers. You can now enjoy this sound on your favourite loudspeakers!\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno-250LTD-back.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFuss-Free Tube Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno 250 LTD delivers a practical, stable, reliable and fuss-free ownership experience. There is no requirement for manual bias regulation thanks to the ingenious electronic circuit management of the KT150 tubes. All parameters are constantly optimised over the entire operating life of the tubes. In addition to the security and consistency of a system which is always perfectly fine-tuned regardless of electrical grid conditions and power tube aging, the control circuits allow “Tube Rolling” without worrying about bias regulation.\u003c\/p\u003e\n\u003cp\u003eAnother significant advantage for users is the extended longevity of 300B power tubes. This design places very little stress on the tubes and they will last well beyond their typically rated five thousand hours. The Alieno circuitry results in a dissipation of the 300B tubes of about 20W which is half of the maximum expected by tube manufacturers. Balances between various sections of the circuit are intrinsically managed and ensured through\u003cbr\u003eactive circuitry and precise passive components selected for their sonic purity. There are no trimmers to adjust and no negative feedback – just the purity of the original tube sound.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA Monumental Achievement!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Alieno 250 LTD is a no-holes-barred attempt at making the world’s best power amplifier. It is uncompromising in its design and incorporates multiple exclusive technologies and topologies to create a once-a-generation heirloom piece. The SET topology, lack of output transformer, lack of any solid-state device in the signal path and 250W of power giving the owner the freedom to choose any speaker are not just rare attributes – this is the ONLY amplifier in the world which can do this.\u003c\/p\u003e\n\u003cp\u003ePutting aside it’s unique design and no-expense spared build quality, when combined with the Alieno Preamplifier it is simply one of the best sounding stereo amplification systems ever created. It is sonically transparent to the source and facilitates nothing but the music. It has taken one man 30 years to develop and then hand-build a rare piece of audiophile utopia. There is evidence of engineering genius all over the Alieno 250 LTD and once you experience it, you forget everything you thought you knew. Considering how much money audiophiles spend over a lifetime of trying different amplifiers, the Alieno is a revelation. Meet THE destination amp. Mind blowing.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/nirvanasound.com\/wp-content\/uploads\/2021\/03\/Alieno-250LTD-side.jpg\" alt=\"\" width=\"900\" height=\"600\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVideos\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUltimate Audio presents Alieno Pre\/power and Ideon Absolute Dac\u003cbr\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/_dJmZlveT9c\" width=\"300\" height=\"150\"\u003e\u0026lt;span\n style=\"display: inline-block; width: 0px; overflow: hidden;\nline-height: 0;\" data-mce-type=\"bookmark\"\nclass=\"mce_SELRES_start\"\u0026gt;\u0026lt;\/span\u0026gt;\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003eMarten Parker Quintet + Alieno Pre\/Power JVH audition\u003cbr\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/3DbNkAtsJdg\" width=\"300\" height=\"150\"\u003e\u0026lt;span\n style=\"display: inline-block; width: 0px; overflow: hidden;\nline-height: 0;\" data-mce-type=\"bookmark\"\nclass=\"mce_SELRES_start\"\u0026gt;\u0026lt;\/span\u0026gt;\u003c\/iframe\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eItem\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eVacuum Tube Stereo Power Amplifier\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePure Class A, Single Ended OTL-OCL\u003cbr\u003e(Output Transformer Less \u0026amp; Output Capacitor Less), with proprietary LTD technology.\u003cbr\u003eThe acronym means: “Loudspeaker Tube Direct”.\u003cbr\u003eTubes are used exclusively for amplification circuitry and solid state exclusively for the power supply section. No hybridisation of tube \u0026amp; solid-state technology.\u003cbr\u003eTransistors are utilised for power regulation, stabilisation \u0026amp; safety circuitry ONLY.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Output\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e250W RMS continuous per channel (@ 3 Ohms)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDistortion\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAverage 0.1%, Max 0.5% from 20 – 20,000Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e± 0.5dB from 5 – 100,000Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Bandwidth\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 1 MHz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGain\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e22dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput sensitivity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2.5V RMS\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Impedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e100 kOhms (irrelevant capacity)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInput Connectors\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eRCA and XLR\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOptimal Load Impedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 − 8 Ohm\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSignal to Noise Ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 100 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDamping Factor\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 100\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNegative Feedback\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNegative feedback is totally absent (zero)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSlew Rate\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 300 Volts\/Microseconds\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 100A peak per channel\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTubes required per channel\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eECC82 x1 – Preamplifier and driver tube.\u003cbr\u003eKT150 x1 – Stabiliser tube.\u003cbr\u003e300B x1 – Output power tube.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConstant optimisation of all tube operating parameters, including bias, over-voltage and over-current protection along with real-time output impedance management.\u003cbr\u003eAuto adjustment of balance differences between each tube in the circuit.\u003cbr\u003eImprecisely matched tubes or individual tube lifecycle issues are wholly compensated by regulation circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProtection features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThermal threshold independent for each channel.\u003cbr\u003eOne AC main fuse and five fuses on each power supply section.\u003cbr\u003eProtection for wrong connection between power supply unit and amplifier unit.\u003cbr\u003eDouble timer for a gradual loading of the charge on AC power grid.\u003cbr\u003eEach protection has its independent warning LED, including the fuses.\u003cbr\u003eOn\/Off “thump” eliminated by delay relay transient protection.\u003cbr\u003eInfallible loudspeaker protection circuitry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions (including cables plugs on rear panels)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAmplifier Unit\u003cbr\u003e450mm (W) x 500mm (D) x 280mm (H)\u003cbr\u003e17.7″ (W) x 19.7″ (D) x 11″ (H)Power Supply Unit\u003cbr\u003e450mm (W) x 600mm (D) x 270mm (H)\u003cbr\u003e17.7″ (W) x 23.6″ (D) x 10.6″ (H)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e100 kg (220.4 lb) Net\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDocuments\/Links\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.acusticaapplicata.com\/alieno_amplifier.php?lang=en\"\u003eManufacturer’s Website\u003c\/a\u003e\u003c\/p\u003e","brand":"Alieno","offers":[{"title":"Default Title","offer_id":51889737630017,"sku":"ACU-ALIENO-250-2","price":139000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/2636\/1921\/files\/Alieno250LTDMk2OTL-OCL300BTube250WStereoPowerAmplifier1.jpg?v=1782565487"},{"product_id":"alieno-twin-chassis-tube-phono-stage-with-dc-battery-powered-supply","title":"Alieno Twin Chassis Tube Phono Stage with DC battery powered supply","description":"\u003cp\u003eALIENO Phono Preamplifier is a tube phono stage for Moving Coil cartridges.\u003cbr\u003eIt has three gains available (66 – 60 – 54 dB), easily selectable by a jumper after opening of the upper panel.\u003c\/p\u003e\n\u003cp\u003eCartridge load setting by blind Rca plugs on rear panel. Overall internal impedance of phono stage less than 250 Ohms, for perfect matching also with very low impedance (from 2500 Ohms up) line preamplifiers.\u003cbr\u003ePower supply in a separate cabinet with Virtual Battery Powered technology. Two Rca inputs selectable by a switch on rear panel, RIAA equalization, Rca and XLR outputs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eInputs \/ Outputs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e2 × RCA inputs (rear-switchable) • RCA \u0026amp; XLR outputs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGain Settings\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e66 dB \/ 60 dB \/ 54 dB (internal DIP-switch selectable)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCartridge Load Options\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e100, 220, 330, 470, 750, 1000 Ω (via RCA load plugs)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWeighted S\/N Ratio\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 80 dB @ 1 mV input\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHarmonic Distortion (THD)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026lt; 0.05%\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRIAA Accuracy\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e±0.1 dB\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHeadroom\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u0026gt; 25 Vrms maximum undistorted output\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOutput Impedance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e250 Ω (ideal for driving preamps ≥ 2.5 kΩ)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTube Complement\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e12AY7 + ECC83 (low-noise cascode input) • E88CC (EQ network driver) • ECC82 (additional gain) • E88CC (output buffer)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Supply\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExternal PSU with Virtual Battery Powered Technology • 240–115 V AC ±10%, 50\/60 Hz\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMain Fuse\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eT1 A (T2 A for 115 V)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePower Consumption\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e~80 VA\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions – Amplifier Section\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e45 × 41 × 18 cm • 17.7″ × 16.1″ × 7″ • Weight: 12 kg \/ 26.4 lb\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions – Power Supply Section\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e33 × 32 × 10 cm • 13″ × 12.6″ × 4″ • Weight: 9 kg \/ 19.8 lb\u003c\/p\u003e","brand":"Alieno","offers":[{"title":"Default Title","offer_id":51889744609601,"sku":"ACU-ALIENO-PHONO","price":70000.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0993\/2636\/1921\/files\/AlienoTwinChassisTubePhonoStagewithDCbatterypoweredsupply1.jpg?v=1782566769"}],"url":"https:\/\/www.magentaaudio.com.au\/collections\/alieno.oembed","provider":"Magenta Audio","version":"1.0","type":"link"}