Bass players looking to expand their tone palette won't want to miss Roland's new GK-3B pickup, designed for driving synth-bass rigs such as the V-Bass and GR-20 guitar synthesizer. Much smaller and thinner than its GK-2B predecessor, the GK-3B is similar to its guitar counterpart, the GK-3, but catered to bass players. The big GK Knob allows control of the volume, and the Select Switch lets you quickly toggle between normal bass tones, synth sounds, and bass and synth sounds mixed together. Installation is a snap thanks to the included attachment holder and double-sided tape. Do it yourself -- it's fast and easy.