SKU: 93191269978

Earthquaker Bows Germanium Preamp Booster

Sale price$113.99 Regular price$126.65
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Ships within 48 hours · Estimated delivery Aug 6 - Aug 11

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Description

Earthquaker Bows Germanium Preamp BoosterThe Bows is a Germanium preamp designed around a rare NOS OC139 black glass transistor. For being a little one knobber the Bows wears many hats. Right out of the box it's got several tone shaping abilities spread between two modes: Full and Treble. Full mode is warm with a lot of body and low end. Treble mode is a resonant, treble booster with a cocked wah tone that can drive any tube amp into harmonic rich distortion territory. Each mode has a little

The Bows is a Germanium preamp designed around a rare NOS OC139 black glass transistor. For being a little one-knobber the Bows wears many hats. Right out of the box it's got several tone shaping abilities spread between two modes: Full and Treble. Full mode is warm with a lot of body and low end. Treble mode is a resonant, treble booster with a “cocked wah” tone that can drive any tube amp into harmonic rich distortion territory. Each mode has a little bit of grit to start with, but as you get passed 12 o'clock on either setting their subtleties are accented. The vowel-like sound out of the Treble side will be more prevalent as you bring the Level up. Doing the same on Full mode will get you a nice, full bodied crunch tone that retains clarity. Place any drive pedal before the Bows and it's another story. Full mode turns a dirt signal into a crumbling wall of sonic chaos, while Treble mode becomes an ultimate lead tone. Each and every Bows is built one at a time by real life human beans in the temperature controlled bubble of Akron, Ohio.

This device is true bypass and uses relay based “soft touch” switching. Audio will not pass without power.

Controls

Level: Adjusts the output level by setting the bias voltage of the transistor. A small amount of noise while dialing this in is perfectly normal.

Tone Toggle: “Treble” for a brighter, more resonant tone and “Full” for a warmer, bass-heavy push.

Power: Please use a standard 9 volt DC power supply intended for musical instruments with 
a negative center 2.1mm barrel or a 9v Battery

Current Draw: 9ma

Specs

Type: Boost
Power Supply: 9 Volt DC 2.1mm negative center
True Bypass/Buffer: Yes
In's - Out's: 1 In - 1 Out
Stereo/Mono: Mono
Expression Out: None
Analog/Digital: Analog
Battery Connection: Yes
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 93191269978

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4.4 ★★★★★
Based on 19 reviews
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Verified Purchase
Kelley
Lexington, US
★★★★★ 5
Works great
Size: 8.8" x 9.3" x 1.2"
This fit perfectly in my 2017 Acura MDX. I can change my own filter in less than 5 minutes and it costs much less than the OEM. The filters lasted me about a year before I needed a new one.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
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Verified Purchase
Plis
Alexandria, US
★★★★★ 4
Encaja perfecto
Size: 8.8" x 9.3" x 1.2"
Trabajo muy bien
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Reviewed in the United States on March 24, 2026
M
Verified Purchase
Mathew
Alexandria, US
★★★★★ 5
Great product !!!
Size: 8.8" x 9.3" x 1.2"
The product was in great shape when delivered. Even though the package was thin as it is the delivery was made with card and all was well with product. The instructions were good to use and change in my car. Also it showed the make of vehicle so I won’t be confused at all. Overall it was a great buy
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Reviewed in the United States on May 13, 2026
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Verified Purchase
Amazon Customer
Draper, US
★★★★★ 5
Fits my Accord perfectly!
Size: 8.8" x 9.3" x 1.2"
Fits my 2008 Accord perfectly and feels just as sturdy as the OEM I used before, which cost nearly twice as much. Plus, it includes activated carbon, something the OEM didn’t have.
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Reviewed in the United States on May 15, 2026
S
Verified Purchase
Susan F. Montville
Waukegan, US
★★★★★ 5
Easy to do it yourself and save!
Size: 8.8" x 9.3" x 1.2"
One place wanted $85 to replace this! Another wanted $50! I ordered this for $10, watched a YouTube video and did it myself! Super easy!
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Reviewed in the United States on May 10, 2026

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