With this preamp， you spend less time tweaking controls and more time playing.

Tone and volume control.

With volume， bass， middle， treble， presence

Presence Control: ±12dB at 8KHz

Bass Control: ±12dB at 60Hz

Middle 1 Control: ±12dB at 450Hz

Middle 2 Control: ±12dB at 1KHz

Treble Control: ±12dB at 2.2KHz

Input Impedance: 10MO

Frequency Response: 20Hz - 20KHz

Power: 9V alkaline battery (not included)

A phase switch provides additional feedback control by allowing the phase of the pickup to be reversed in relation to the phase of the amplification speakers