Boss PQ-4 Parametric Equalizer – 1991 MIT Silver Label

Professor's Notes

A great sounding, easy to use but powerful recording console style semi-parametric EQ in a compact Boss pedal format.

Condition

This effect pedal is in Very Good condition. There are normal signs of wear on the exterior such as scattered scuffs, scratches and slight aging of the finish. There are no issues that impact sound or functionality. We thoroughly cleaned the unit, replaced the rubber screw grommet, and tested with a 9v battery and compatible power supply. All functions are operational. Build date of May 1991. The original packaging and instructions are not included.

Specifications

Controls: Pedal Switch, Low, Presence, Middle Level, Middle Frequency, High Level, High Frequency, Level

Jacks: INPUT, OUTPUT, AC adaptor

Input Impedance: 1M Ohm

Output Impedance: 1K Ohms

Recommended Load Impedence: 10k ohms or greater

Residual Noise: Over 98dB or less (IHF-A)

Power: Battery 9V (x 1) AC Adaptor: PSA-Series

Current Draw: 23 mA at 9V

Dimensions: 70(W) x 55(H) x 125(D) mm, 2 3/4(W) x 2 3/16 (H) x 4-15/16(D) inches

Weight: 410g/15oz