The JB Model TB-4 Trembucker is one of Duncan's — and the world's — most popular pickups. It provides the classic sound of a hot-rodded humbucker that we've all loved for the last 30 years. Boasting plenty of output without sacrificing tone and adding the right amount of harmonics, sustain, and distortion, the JB Model TB-4 is great for anything from heavy blues to heavy metal — with an emphasis on heavy! But excelling at aggressive music isn't all the TB-4 can do. It cleans up nicely and provides clear and distinct tones. And the TB-4's F-spaced pole pieces make it ideal for trem-equipped guitars.