Fishman Powerchip - installation preamplifier with active volume control. Combination or splitting of piezo and magnetic pickups (mono or stereo).

EMG RPC Peak Control- Active Tone Control for Guitar & Bass- The RPC is a Variable Active Control that amplifies the frequency response of a guitar up to 6 dB at 4000 Hz and simultaneously reduces the low frequency...

EMG EXG Expander 1 Poti - features treble and bass boost, lowers the midrange. Only for EMG Pickups. 941.952.

EMG PA2 Preamp/Booster - 1x mini-switch with 0-20dB boost. Suitable for guitars and basses and for EMGs and passive pick-ups.