Rockville PPA20 Rack Mount Pre-Amplifier. 1U Rack Size. 1/4" microphone input. RCA PHONO / AUX1 / AUX2 / AUX3 / AUX4 / AUX5 inputs. 1/4" headphone output. RCA REC / LINE outputs. XLR master output ( left, right ). Headphone volume & Microphone volume controls. 3 band EQ (Treble / Mid / Bass). Master volume. L / R balance. Input source switch. Mono / Stereo switch. Mute.

Low Cut Switch allows you to cut off certain frequencies which comes in handy when using turntables, subs, and other gear. This function will allow you to play your music louder, with lower distortion and make your speakers last longer. Treble / Bass control. Loudness compensation circuit which at low-to-medium volume boosts the bass and treble response. Tape Monitor . Ground lift switch.

Unit dimensions: 18.89" x 6.49" x 1.73" inches. Unit weight: 4.43 lbs. Shipping dimensions: 20.47" x 8.46" x 4.33" inches. Shipping weight: 5.73 lbs. 110/220 switchable power supply (fuse: 0.2A)

Inputs Sensitivity/Impedance. Mic: 1mV / 3 Kohms. Phono: 3mV / 47 Kohms. Tape, Tuner, CD, Aux: 150mV / 22 Kohms. Output/Impedance. Tape Rec: 150mV / 3 Kohms. Pre Output: max. 11V / 1 Kohms. Total Harmonic Distortation. Mic: less than 0.02%. Phono: less than 0.04%. Tape, Tuner, CD, Aux: less than 0.01%. Signal To Noise Ration. Mic: more than 70 dB. Phono: more than 90 dB. Tape, Tuner, CD, Aux: more than 100 dB.

Frequency Response: 5Hz . 30kHz +0, -3 dB. Bass: 12dB at 100Hz. Midrange: 9dB at 1 Hz. Treble: 12dB at 10kHz. Loudness: 9/0/+9dB at 100/1k/10kHz. Mute: 20dB. Power: 120V or 230V, 50/60Hz. Power Consumption: 15W.