This is a P-Bass assembly equipped with a HUMPBACK ENGINEERING Handmade Paper-in-Oil CAP -BLACK-. -Overview- Instead of aiming to copy existing ones, we tuned it to produce "sound that shines in the ensemble" while trying out readily available materials one after another. We paid attention not only to the type of wiring material but also to the difference in sound quality depending on the direction, and tuned it. We compared the insulation paper by thickness and hardness, and selected the one with the thickest core. The capacitance was narrowed down during the process of pursuing the sound, and it became only around 0.02μF. If a large capacitance is required, please use a parallel connection of multiple capacitors. -BLACK- BLACK has characteristics that maximize the density and projection of the mid-low range. For guitars, it's suitable for British-style, strong distortion, and jazz guitar tones. For basses, it's suitable for the thick, chewy feel and elasticity of the mid-low range, and when you want more grip. Wiring: Vintage Cloth Wire Solder: Kester Pot: CTS 250K Solid Shaft Audio