(7 customer reviews)


***This Limited First Edition Sparkle Green Colorway includes a Custom Hand-Crafted Diamond Bakelite Knob and FREE BONUS Giza Patch, Pick, and Sticker Pack while supplies last!***

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.

All pedal orders ship via Fedex 2Day or Fedex International Priority and typically arrive within 1-3 business days.

Out of stock

SKU: DID-GZA Category: Tags: , , ,


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


7 reviews for Giza

  1. Noah (Dooms) Whistler

    All I’ve got to say is wow, Does it Doom has done it again. First thing I did when getting this pedal in was plug in my bass, and twist the knob. It was like a wall of tone poured through my ears. It can go from brutally thick doom tones like Monolord, all the way to a clear gritty tone like in OM. But this is no one trick pony, it sounds equally as good on guitar. No matter how much I turned the knob to the right, it still held on to its clarity. No lost muddy notes, just crushing tone while the notes rang out beautifully. I would also like to comment on the beautiful aesthetics of the pedal. I’m a sucker for cool artwork, and it does not let down in that department either. There is one thing that is for certain with this pedal, it’s never leaving my board. 🤘🏻

  2. Michael, Allegedly…

    This is it. This is the tone you wish you had! literally the moment I smashed that first power chord I knew. I know I’ve transcend to the halls of Tonehalla! I couldn’t be any happier with the Giza! I’m planning on going back and re-recording multiple sections of the album I’m currently working on just to incorporate this tone in my work!

    You don’t want this. You need this.

  3. Zach Januse

    When I first plugged into the Giza and played that first chord . I instantly thought of the guitar tone from Aurora by sunn O))). Just the amount of low end growl from this is perfect . Steve and Nick came up with another solid pedal .

  4. Al C. (Not Cisneros, sorry)

    What Nick and Steve have managed to achieve with this pedal is truly special. Not only did they nail what, to me, is the best era of OM’s tone (which puts it in high ranking for best tone ever) it was done in a way that people who’ve never heard of Sleep or OM that are looking to add a little or a lot of grit to their tone can benefit. For having such a specific goal this thing sounds amazing through the full range of the knob out of every amp I’ve tried it (huge tube amps and small practice amps and assortment of basses). Goes from a really organic overdriven amp tone to tortured speaker crackling without the back pain associated with moving a wall of tube amps.

  5. DB

    Lemme preface this review by mentioning that I don’t play bass, but this isn’t just a bass pedal. I’ll get to that in a minute. If you have similar Sleep-themed pedals like I do, then you can rest assured this isn’t a Fuzzface FET120 clone or anything like that. It does its own thing and DAMN, it does it well. Even with the knob at minimum (just the amp emulation only) setting it sounds so perfectly dirty. One of my favorite tones I’ve heard from the Giza so far is putting a fuzz before the Giza and setting the Giza at about 9’o clock. It just brings out so much saturation and grit while keeping things clear and distinct. On its own cranked the Giza is absurdly huge and thick, just straight-up epic. It even sounds good through my $10 practice speaker! It really does note clarity very well. All this was on my downtuned Warlord which was dope and all, but I wanted to try some bass tones. Sure enough, even on an emulated bass guitar synth coming from my laptop it sounded great. Very happy with this purchase. Also, in my opinion this is the coolest looking pedal from Does It Doom which is really saying something cause they all look pretty sick.

  6. Chad Brack

    I’ll begin by saying that I didn’t “need” this pedal because I don’t play bass. I do have a guitar that’s set up to sort of simulate a bass, though, and the Giza sounds great with it. I wasn’t sure what to expect because I’ve never tried a bass pedal before, but Does It Doom? always comes through, so I took a chance with it. This pedal is very versatile. It’s pretty impressive how you can hear the different gain stages kicking in as your turn up the knob. The preamp portion both takes and drives other dirt pedals extremely well. In fact, I found that it sounds super badass going into my RAT, which was a complete surprise. It also crushes on the dirty channel of my Rocker 15 with the gain maxed. I’ve used the Giza with several guitars with various tunings, and it works well with all of them, even E standard. It’s a cool pedal to have because it’s so different from my other fuzzes and overdrives. I also have to mention the artwork. This pedal looks amazing, and the green enclosure is something to behold. I’ve never seriously considered buying a bass, but this might change my mind.

  7. Ollie

    Even though all the does it doom pedals sound great on bass I was stoked to learn about the Giza given that it is designed with bass specifically in mind. This beast does not disappoint and is now my favorite of the three preamp based pedals that Steve has to offer. Killer tone all the way around the dial.

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