This is the preamp (with control plate and output jack) from my 1999 Fender American Deluxe Jazz Bass. Excellent condition, works perfectly. Knobs are: Volume, Balance, Bass/Treble, Mid. Able to get a very wider range of sounds out of this, only selling because someone 'endowed' me with a free Audere. I play only for myself and with friends, it's never been gigged and has been very well taken care of. Sorry the cell phone pics aren't the best. According to Fender: Controls: Master Volume, Pan Pot, 3-Band Active EQ with: Treble Boost/Cut: ± 10 db @ 8kHz, a shift in the cut frequency, and about a 2dB slope per octave. Mid Boost/Cut: +10dB, -15dB @ 500Hz, and a wide band slope. Bass Boost/Cut: ± 12 db @ 40 Hz, with a 4dB slope per octave. $50 shipped CONUS.