one Sadowsky onboard preamp available, recently removed from a Metroline bass. It works perfectly and is nearly new. 4 pots: volume, blend, VTC, bass boost / treble boost stacked. Inlcudes battery clip and output jack. Wired except for pickup and ground connections.
NO KNOBS are included in this sale.
including shipping in USA lower 48, other locations ask me for a shipping price.