SKU: 74365985885

Electronic Audio Experiments Greathammer

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Description

Electronic Audio Experiments GreathammerMaker: Electronic Audio Experiments Model: Greathammer Condition: New Description: The Electronic Audio Experiments Greathammer is a bass focused overdrive that brings a distinct flavor of solid state thunder. With a gain control spanning a 50dB range, the Greathammer can be restrained or rowdy. We took cues from a beloved 1970s Canadian bass amplifier, but we did not shy away from redesigning entire circuit blocks from scratch. Without taking away

Maker: Electronic Audio Experiments 

Model: Greathammer

Condition: New

 

Description:

The Electronic Audio Experiments Greathammer is a bass-focused overdrive that brings a distinct flavor of solid state thunder.

With a gain control spanning a 50dB range, the Greathammer can be restrained or rowdy. We took cues from a beloved 1970s Canadian bass amplifier, but we did not shy away from redesigning entire circuit blocks from scratch. Without taking away the classic piano-like attack that defined 90s noise rock, we expanded the tonal range to suit more tasteful playing or filthy, down-tuned mayhem. Critically, our circuit can achieve far deeper low frequency extension than its progenitors all without the unnatural, disconnected feel of a traditional clean blend.

The Greathammer works equally well in front of an amplifier or as a dedicated preamp. And, while we designed this with bass as a primary focus, it is quite striking on guitar as well.

Controls:



Level - overall volume level, capable of
extremely high output

Gain - signal gain, from clean to moderate to extreme. Approximately 50dB maximum passband gain.

Bass - post-clipping low frequency shelf boost, up to +14db at 100Hz and below

Attack - pre-gain tone control, adjusts frequencies above 1kHz to tailors the overall drive response and sharpness of pick attack

Notch toggle - 3-position mid cut. Center is a full mid cut, down is a moderate mid cut, and up is flat mids. 



Specifications:

Power: 9V DC, center negative, <65mA current at idle. We recommend a regulated, isolated power supply rated for 200 mA minimum. The PSU input is protected against reverse polarity and over-voltage. Our pedals do not accept batteries. 


Bypass: buffered bypass with soft-touch electronic switching

Input impedance at 1kHz: 1MΩ


Output impedance at 1kHz: <1kΩ

Dimensions: 4.7ˮ x 2.6ˮ x 2ˮ 
Weight: 1 lb

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    Exchange/Return Notes
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    • To process your return/exchange, please contact us at [email protected]
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    SKU: 74365985885

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    4.1 ★★★★★
    Based on 25 reviews
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    D
    Verified Purchase
    Dan
    Whiting, US
    ★★★★★ 5
    Works
    Size: For 60 65 70 75 HP
    Works great
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 21, 2026
    B
    Verified Purchase
    Billy kinney
    Whiting, US
    ★★★★★ 4
    Great product
    Size: For 85-300 HP
    Complete rebuild kit for $38 and great quality and fast delivery
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 30, 2025
    G
    Verified Purchase
    grog
    Natrona Heights, US
    ★★★★★ 5
    If pump doesn't seem to work
    Size: For 85-300 HP, Size: For 85-300 HP
    Hi....I apologize it took me a while to get back to you with my results. Here is what I discovered about the pump and will also apply to some of the other comments I read in the reviews with people not getting the pump to work: 1.) I removed the pump to check the proper direction of the impeller and it was correct as can be seen in the photo. 2.) I built a pump shaft attachement so that I could operate the pump with a power drill. 3.) I attached the water muff to the unit and tried to pump water.....it wouldn't do so. What I did see however was that even at high hose discharge and small leakage at the muff I could not fill the water cavity in the housing. 4.) I installed a strap around the muff and tightened it very tight and THEN at high hose pressure I was able to get the cavity to fill with water. 5.) At that point I activated the drill and was able to get the pump to actually pump water. I then removed the pump housing and removed the O-Ring that resides on top of the impeller, reassembled and it would not pump water. Since the O-Ring sits higher than the original does I wanted to make sure that it was necessary to have it in the pump. 6.) I reassembled the engine and kept the tight strap on the bottom and finally it pumped water into the engine. My conclusion that you can reply to other buyers if they have a problem: Do NOT underestimate 2 things....1.)the lack of ability of the pump to draw water up AND 2.)the fact that if the muff leaks it will NOT fill the cavity when common sense says it should. This was a 120hp Johnson. The engine bottom must be immersed fully or the muff must be very tight on the lower unit for the pump to function. Please feel free to post this if you wish.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 12, 2024
    M
    Verified Purchase
    Monchita
    West Palm Beach, US
    ★★★★★ 5
    Exelente
    Size: For 85-300 HP
    Exelente
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 21, 2026
    D
    Verified Purchase
    Dave Murray
    Carnegie, US
    ★★★★★ 5
    Good as new
    Size: Package Dimensions ‎6.02 x 4.02 x 2.05 inches
    Fitment was great and works as it should. Good quality
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 19, 2025

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