Excellent condition Bassmods Q534. Active preamp. Reed James p/j set with coil tapping and on off passive/active switch, passive tone control included. Straplocks included. proprietary preamp from bassmods. 18V active/passive. Knobs: volume/passive tone - pickup pan - mid (push/pull for frequency select) - hi/low. Switches: on/off - coil tapping for the p-pickup, switches between series and parallel. It's an incredibly versatile preamp. A little over 9 lbs weight.