Yamamoto Sound CraftBT-1 Titanium Bolt Set for Cartridge Installation

The material is titanium alloy, which is light and strong, and has the effect of improving sound quality when used when stopping the cartridge. Since the cartridge picks up the unevenness of the vinyl record as a music signal and plays it back, the effect of the vibration is significant. Of course, the impact on the sound quality of the headshell is significant, but the screws that secure the cartridge also greatly affect the sound. It seems that materials with soft materials have a softer sound, and harder materials have a harder sound. Titanium alloy has a specific gravity of 4.5, which is about half that of brass, etc., and its strength is as hard as steel, and it is also used for horn driver diaphragms in the acoustic field, so it can be said that its merit in terms of sound quality is great. In general, it is said that the speed of sound (speed of sound) transmitted to a material is faster for lighter and stronger materials. These conditions prove that titanium alloys are excellent as set screws for cartridges.
A brass gold-plated nut is supplied as a fixing nut, but this nut is custom-made and adopted in a type with a small external dimension. Therefore, even if it is used on the cartridge side, it fits comfortably into the mounting part of most cartridges. The nut is M2.6 and the opposite side is 4.0mm.

format	Cartridge mounting bolts and nuts
Set Contents	Plus head titanium bolt M2.6 length 6mm, 8mm, 12mm, 15mm 2 pieces each 8 pieces in total 2 brass gold-plated nuts, 4mm on the opposite side
material	Titanium alloy bolt fabric finish (light black), brass gold-plated nut

The rise of the sound tends to improve, and the weight of the bass is maintained while the exit is improved.
*Analog Magazine Review