Boss CEB-3 Bassguitar Effects Pedal

Boss CEB-3 Bass Chorus Pedal — Lush Modulation Without Losing the Low End

The Boss CEB-3 Bass Chorus pedal is a stompbox built specifically for electric bass, using a built-in crossover to apply chorusing only where it belongs — the upper frequencies. The fundamental bass tone passes through untouched, so the low end stays tight and punchy while the modulation adds movement above.

What Makes the CEB-3 Different From a Guitar Chorus

The defining feature is the Low Filter knob, which controls how far down into the bass register the modulation reaches. Guitar-oriented chorus pedals tend to swallow low-end content; the split-frequency circuit of this model solves that at the design level. Stereo Output A and B jacks also let bassists run a wide field into dual amps.

Four-Knob Control Surface for Precise Shaping

Four dedicated knobs give bass players full command without menu-diving. Each control maps directly to a single sonic variable.

• E.Level: Effect Level — blends chorused signal with dry bass tone
• Low Filter — variable crossover point that sets how deep modulation reaches into the bass register
• Rate: Modulation speed — controls how fast the chorus voice oscillates
• Depth sets how wide the detuning sweep travels, allowing for customizable modulation intensity.

Signal Path, I/O, and Bypass Behavior

Buffered bypass replaces true bypass here, preserving tuned impedance across long cable runs. Stereo and mono operation are both supported.

• Input: 6.3 mm TS jack, 1 M ohm impedance
• Outputs: 6.3 mm TS jacks (Output A mono + Output B stereo), 1 k ohm output impedance
• Bypass — buffered (not true bypass), keeping tone consistent through long cable runs
• The nominal I/O level is -20 dBu, which is calibrated to suit both passive and active pickups.

Power Options and Physical Footprint

Built to fit the standard compact pedalboard format, this instrument drops onto any existing layout without taking extra space.

• Power: 9V battery or PSA-series AC adapter (sold separately), 55 mA draw, ~6 hr battery life
• Dimensions: 73 × 129 × 59 mm — standard compact chassis
• Weight: 420 g including battery
• This unit includes a five-year warranty.