GEB-7 Bass Equalizer

The BOSS GEB-7 Bass Equalizer is a 7-band graphic equalizer designed specifically for bass guitars and upright bass instruments. Its features and technical specifications include:

- 7 bands offering a 15 dB boost/cut over a frequency range of 50 Hz to 10 kHz, with the 10 kHz band being a high-frequency shelf
- Can be used as a "boost" or "cut" pedal using the level control knob
- Full range response, even for five- and six-string basses
- Inputs: 1 x unbalanced 1/4" instrument TS
- Nominal Input Level: -20 dBu
- Input Impedance: 1 MOhm
- Outputs: 1 x unbalanced 1/4" instrument TS
- Nominal Output Level: -20 dBu
- Output Impedance: 1 kOhm
- Residual Noise: -100 dBu
- Current Draw: 16 mA @ 9 VDC
- Dimensions: 2.9 x 5.1 x 2.4" / 73 x 129 x 59 mm
- Weight: 1 lb

The pedal also features a level control knob, pedal switch, and indicator for battery check. It can be powered by a 9V DC dry battery or an AC adaptor (BOSS PSA-120 or PSA-120T, optional).