TPJ Posted March 19, 2017 Share Posted March 19, 2017 (edited) John East BTB onboard preamp with push/pull passive tone control. First stack is vol/blend, second stack is bass/treble with pull for treble boost, third is tone control that works in active and passive mode. It's also a push/pull that switches the preamp between active or passive. Comes with black knobs. I detached the battery clip when I installed it as I had a battery box on the bass but will include the clip. You'll need to download a wiring diagram as I can't find the original but it's a pretty striaght forward install as are most of John's preamps. £80 posted. No trades, thanks. Sold now. Edited March 23, 2017 by TPJ Link to comment Share on other sites More sharing options...
TPJ Posted March 21, 2017 Author Share Posted March 21, 2017 Bumpage Link to comment Share on other sites More sharing options...
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