Yamamoto Sound Craft
WA-1 M3, M2.6 screws weight control washer

WA-1 is a set of 10 brass washers that can be used to increase the weight of analog cartridges when they are mounted on a headshell. Analog cartridges vary in weight from product to product. When they are mounted on a headshell, it is necessary to change the weight balance of the arm for each cartridge. WA-1 can be used for the purpose of increasing the weight in such cases.

Combined with the BT-2 (sold separately), the weight of each headshell can be matched to eliminate the need for needle pressure adjustment when replacing cartridges. The heavier the weight of the cartridge and headshell, the more robust and powerful the sound tends to be. Adjustment of the weight can also change the sound quality tendency.