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The Electronic Audio Experiments Greathammer is a bass-focused overdrive and preamp that reimagines the aggressive character of vintage Canadian solid-state amplifiers. Built for players who demand thick, articulate low-end with crushing drive, the Greathammer delivers piano-like attack and percussive punch across a wide range of gain settings. From subtle preamp coloration to wall-shaking overdrive, this pedal maintains exceptional low-frequency extension without sacrificing clarity or cohesion. Equally at home on bass or guitar, it excels in noise rock, post-hardcore, and experimental textures.

At lower gain settings, the Greathammer provides a bold, articulate preamp voice with exceptional clarity and low-end authority. Increase the gain and it transforms into a harmonically rich, crushing drive with enormous depth and texture. The Attack control shapes pick response and upper frequencies for tonal flexibility, while the 3-position Notch switch offers multiple midrange voices from flat and punchy to deeply scooped. Use it as a front-end overdrive or dedicated preamp—the Greathammer adapts to your signal chain and playing style.

Specifications

• Type: Bass Overdrive / Preamp
• Controls: Level, Gain, Bass, Attack, 3-position Notch toggle
• Gain Range: Approximately 50dB maximum passband gain
• Bass Control: Post-clipping low-frequency shelf boost, up to +14dB at 100Hz and below
• Attack Control: Pre-gain tone shaping for pick attack and high-frequency response
• Bypass: Silent electronic switching with high-headroom buffered bypass
• Input Impedance: 1MΩ @ 1kHz
• Output Impedance: <1kΩ @ 1kHz
• Power Requirement: 9VDC center negative, 2.1mm barrel
• Current Draw: Approximately 70mA
• Power Supply Recommendation: Regulated isolated supply, minimum 100mA
• Protection: Reverse polarity and over-voltage protection up to 20V
• Battery Operation: Not supported
• Designed and built by Electronic Audio Experiments, USA