Yamamoto Sound Craft Brass bolt set for BT-2 cartridge mounting

Generally used aluminum screws seem to be low in strength and disadvantage in sound quality. BT-2 is a set of brass bolts and nuts that can be used in such cases. Each bolt has 7 different lengths, each with a set of 10 4 mm nuts. Using these long screws to release separatelyWA-1It is also possible to adjust the weight including the head shell and cartridge together. For fine-tuning, adjusting the number of nuts and the length of the bolts makes it possible to unify the weight of the head shell, making it easier to use. If the total weight of the cartridge and the head shell is unified, the needle pressure adjustment is no longer necessary at the time of the carlidge change, and cartridge replacement is easier. The nut that comes with the BT-2 is smaller than 4mm and can be used for the grooves of the cartridge body. The weight of each part is described below, so please refer to weight adjustment.