Electronic Audio Experiments Greathammer Bass Driver

The Electronic Audio Experiments Greathammer is a bass-focused overdrive designed to deliver massive solid-state thunder with clarity, punch, and serious low-end extension. Inspired by a beloved 1970s Canadian bass amp but rebuilt from the ground up, the Greathammer captures that classic piano-like attack while expanding the tonal range into everything from tasteful drive to filthy, down-tuned mayhem.

With an enormous gain range and deep low frequency response, the Greathammer avoids the disconnected feel of a typical clean blend, keeping your tone full and cohesive. It works brilliantly in front of an amp or as a dedicated preamp, and despite being designed with bass in mind, it sounds equally striking on guitar.

Features & Specs:

• Type: Bass-focused overdrive / preamp pedal

• Bypass Switching: Silent electronic switching with high-headroom op amp buffer

• Input Impedance (1kHz): 1MΩ

• Output Impedance (1kHz): <1KΩ

• Power: 9VDC (2.1mm centre negative)

• Current Draw: 70mA

• Power Requirements: Regulated, isolated supply recommended (100mA minimum)

• Protection: Reverse polarity and over-voltage protection up to 20V

• Battery Operation: Not supported

• Warranty: Standard warranty included

Controls:

• Level: Overall volume with extremely high output capability

• Gain: Clean to extreme overdrive (approx. 50dB max passband gain)

• Bass: Post-clipping low shelf boost (up to +14dB at 100Hz and below)

• Attack: Pre-gain tone shaping above 1kHz for drive response and pick sharpness

• Notch Toggle: 3-position mid cut (full cut / moderate cut / flat mids)

• Footswitch: Activates effect with intelligent momentary/latching behaviour

If you want a powerful, aggressive overdrive that stays huge in the lows without losing articulation, the Greathammer is a seriously impressive weapon.