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The GE-7B is a 7 band Equalizer for Bass guitar. The design is very similar to the GE-7 but the frequency bands are optimized for bass guitar. The bands have center frequencies at 62Hz, 125Hz, 250Hz, 500Hz, 1kHz, 2kHz and 4Khz. There is also a level control that allows each band to be adjusted by +/- 15db.

The production moved from Japan to Taiwan early 1992.

Boss GE-7B Bass Equalizer


  • Controls: 7 Band Graphic Equalizer + level control
  • Connectors: Input, Output, AC Adaptor
  • Current Draw: 16 mA (DC 9V)
  • Weight: 450g/0.99 lbs.
  • Input Impedance: 470 kOhm
  • Residual Noise Level: Less than -100dBm (IHF-A)
  • Recommended Load Impedance: 10kOhm or greater
  • Equalizer: 62 Hz, 125 Hz, 250 Hz, 500 Hz, 1 kHz, 2 kHz, 4kHz
  • Level Control: +/-15 dB per band
  • Recommended AC Adaptor: ACA Series


  • Black – Made In Japan
  • Black – Made In Taiwan

The GE-7B was sold from February 1987 to February 1995.