Effect Pedals & Processors
Xotic Bass BB Preamp V1.5
Xotic Bass BB Preamp V1.5, Effect Pedal for Electric Bass, Booster or distortion, With volume, gain, treble and bass controls, True bypass switch, ±30 dB Boost or Cut@+*Note:* Power supply unit sold separately (not included)
https://www.bizrate.co.uk/effectpedals_processors/xotic-bass-bb-preamp-v1-5-oid26343903349.html