vailable in either milled brass or cured resin, these corrective shims allow you to correct your SRA and VTA at the headshell. It is important to optimize your SRA & VTA at the headshell and not by using the tonearm height because by changing the tonearm height you are changing multiple vector forces in addition to influencing the SRA & VTA. Further, since the average VTA correction is 7° to 9° (target of 20° maximum or 18° optimal), no tonearm could accommodate this correction in any case.
It is important to avoid more correction than the cartridge body can handle. Many bodies cannot handle more than 3°-5°. If you are unsure of what your cartridge can handle, contact us to discuss.
The milled brass is preferred on high performance tonearms and cartridges with low to medium compliance due to its higher mass (6gm). You will need to introduce 4x to 5x this figure in effective counterweight mass by either sliding your counterweight away from the tonearm pivot or adding more/larger counterweight.
Choose from +3° to -10° correction in 1° increments. Minus sign indicates angular correction to cartridge that would occur if you LOWERED the arm height. This is the direction over 90% of cartridge owners will need to go as the industry is making their VTA far too high compared to how lacquers are cut.
-7.0 to +5.0 degree shims in 1.0 degree increments. Includes top side shims (Kuzma and standard). Made from glass bead-filled resin. Heat and UV cured to very high rigidity. Replacement shims are $100 each. Kit excludes +1 and -1 degree shims but includes 0 degree (flat) shim for ocassions when additional cartridge height is required or features on top of cartridge headshell interfere with features underside of the headshell (e.g, Ortofon cartridges with Kuzma headshells)
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