Does it Doom Giza Overdrive

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Paying homage to the sacred bass rig embodied by Al Cisneros in the early days of OM, GIZA is a JFET emulation of a modified Green Matamp GT120 preamp combined with the hypnotic pairing of DOD 250 Overdrive and Boss DS-1 Distortion.

Designed in collaboration with Nick Williams of Dunwich Amplification.



Awaken descender eclipse your present plight; Journey unto the divine shrine of GIZA migrator take flight…

Heed the worn path laid read this ritual engraved: Transend current formation and rise to the occasion of sound ordination.

A parallel Clean Blend, Overdrive, and Distortion driving the front end of a monolithic Green Matamp GT120 preamp.

Featuring 36V of headroom for authentic tube-like overdrive and response, the signal is fed into both the DOD 250 and DS-1 with a clean blend around both effects.

The summer signal from the clean blend, DOD 250, and DS-1 is sent into the Green Preamp.

Designed as a grinding bass overdrive, GIZA remains equally crushing on down tuned guitar…

Illuminated conductors project the revered reception; Archaic being incarnated place of profound connection.

Illustrious discovery the genesis of sound; Earth-bass embodied mind touches ground.

The sacred oath taken, hail the lifelong vow; Prevailer plug in, tune down, and bow.


Hreem: Controls the wet/dry mix of a parallel Clean Blend, DOD 250 Overdrive, and Boss DS-1 Distortion driving a modified Matamp GT120 Preamp.

Set the Hreem control at zero for that classic Matamp overdrive or dial it up for multiple gain stages of meditative drones and entrancing harmonic saturation.


Use only a standard 9v DC power supply with a 2.1mm negative-center barrel. An isolated power supply is recommended. Power supply not included.


  • One-knob parallel overdrive distortion preamp for bass and guitar
  • Relay-based, true bypass soft switching
  • Adjustable Master Volume via internal trim pot (MASTER)
  • Adjustable LED brightness via internal trim pot (LED)
  • Premium components including Neutrik input/output jacks, Lumberg power jack, custom hand-crafted bakelite knob, Alpha pot, sealed relay, metal LED bezel, and mil-spec aircraft grade wire
  • Powder coated finish with clear coat and high gloss textured UV printed artwork
  • 4.75” x 2.625” x 2.375”
  • 8.8oz
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Manufacturer Does It Doom
Condition New
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