BOSS GEB-7 Seven-Band Bass Equalizer Pedal

The BOSS GEB-7 is a seven-band graphic equalizer pedal designed specifically for the frequency range of the electric bass. Spanning 50 Hz to 10 kHz, its seven bands cover the full tonal spectrum of bass guitar — from deep sub-lows to articulate upper harmonics — with +/-15 dB of boost or cut at each frequency.

The GEB-7 is built for bass players who demand precise control over their live and studio tone. It handles everything from cutting boomy low-mids to boosting upper harmonics for slap and pop clarity, and delivers full-range response for extended-range instruments including five- and six-string basses.

Equally effective with standard electric bass and electric-acoustic bass, the GEB-7 integrates seamlessly into any bass rig. Compatible with standard 9V power. Backed by the BOSS five-year warranty.

Key Features

• Bass-Optimized Seven Bands: Frequency centers at 50 Hz, 120 Hz, 400 Hz, 500 Hz, 800 Hz, 4.5 kHz, and 10 kHz.
• Extended Low-Frequency Response: 50 Hz band reaches into sub-bass territory for four-, five-, and six-string instruments.
• +/-15 dB Boost/Cut Per Band: Full range of adjustment at every frequency.
• Master Level Control: Functions as a standalone boost or cut pedal independently of EQ settings.
• Electric-Acoustic Bass Compatible: Suits both magnetic pickup and piezo-equipped bass instruments.
• Long Battery Life: Runs up to 18.5 hours on alkaline battery.
• Buffered Bypass: Maintains signal integrity across long cable runs.

Technical Specifications

• Input Impedance: 1 M ohm
• Output Impedance: 1 k ohm
• Current Draw: 30 mA
• Battery Life: Approx. 18.5 hours (alkaline)
• EQ Bands: 50 Hz, 120 Hz, 400 Hz, 500 Hz, 800 Hz, 4.5 kHz, 10 kHz
• Width: 2-7/8 inches
• Depth: 5-1/8 inches
• Height: 2-3/8 inches
• Weight: 15 oz (including battery)