(14 customer reviews)


29dB Of Crushing Clean Boost To Punish The Front End Of Your Favorite Amp Or Dirt Pedal.

The DOOMCASTER is a deafening MOSFET style clean boost circuit that combines the functionality of a powerful boost, a signal enhancing buffer, and a handy attenuator into one doomboard friendly package.

Add punch, presence, and sustain to your tone while maintaining the integrity of your input signal with the turn of a single knob.

Availability: In stock

Place the DOOMCASTER early in your dirt chain to slam the input section of your favorite fuzz, distortion, or overdrive, or set it at the end of your pedal chain for a tailored volume boost.  Crank the boost knob to cast droning sustain upon any amplifier or pedal that lies in its path.

When placed in your amplifier’s effects loop, the DOOMCASTER functions as an attenuator, allowing you to crank your preamp gain while dialing down the overall output volume, achieving the saturated tone of your amp’s front end at bedroom volume.


Boost: Controls the level of boost or cut.  Set the knob at noon for a powerful unity gain signal chain buffer, rotate the knob clockwise for an ultra-transparent clean boost, or rotate the knob counter-clockwise for a versatile signal attenuator.


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.


  • Powerful MOSFET style clean booster / sustainer / buffer / attenuator for guitar and bass
  • Relay-based, true bypass soft switching
  • Regulated internal voltage with overvoltage, overcurrent, and reverse polarity protection
  • Adjustable max gain up to +29dB via internal trim pot
  • Adjustable LED brightness via internal trim pot
  • Premium components including Neutrik input/output jacks, Lumberg power jack, ORMAT knob, Alpha pot, Panasonic relay, metal LED bezel, and mil-spec aircraft grade wire
  • Chrome-like powder coated finish with clear coat and UV printed artwork
  • 4.75” x 2.625” x 2.375”
  • 8.8oz



14 reviews for DOOMCASTER

  1. Andy (verified owner)

    I use this both as a boost right after my fuzz and an overall volume at the end of my pedal chain. It’s essential for tone chasers like me!

  2. Matt (verified owner)

    I went through life thinking I didn’t need a boost pedal, then I tried this one. Now it’s a permanent fixture. Placed right before a fuzz to give it a kick up the backside it adds a lovely bit of girth to my tone while still letting the fuzz do its thing, just with a bit of ‘goes to 11’ action. Delicious.

  3. Jeremiah Johnson

    The Doomcaster is a fantastic booster pedal. Some good uses for it are as a Buffer, to boost the front end of other pedals or the preamp on your amplifier or use it in the effects loop as a volume attenutator. Plenty of great demos on Youtube.


    My name is Anthony from Ampturco Guitar Werks and I am a proud owner of the Doomcaster! This boost is one of the best boost pedals I have come across. It takes all the correct frequencies and puts them out to your ears. It is also a fantastic buffer pedal as well. This is really ideal to either boost you already hot amp or slam it into your favorite fuzz. It plays nice in any location on the board. I dig having it in the beginning before my fuzz and most times it’s always on. It is very transparent and doesn’t add a ton of color to your tone. The other factor I love about it is the one single giant knob. Less is always more for me. Most times with a lot of options I get overwhelmed and far to wrapped up in trying every setting in 9 different ways. I slapped this onto my board and it was perfect right out of the box. I did fiddle with the internal trim pot to add some extra sauce but I ended up really liking it at its stock setting the best. I usually run the knob at about 3 o’clock into both my OR50 and My Rockerverb MkIII. It’s built like a tank and the art work is incredible as always. The powder coat is nice and thick and will definitely hold up for years. It quickly became one of my always on pedals. Definitely check it out, you won’t be disappointed.

  5. Kelley (verified owner)

    This pedal is beautifully simple to use, and amazingly versatile. I have had mine for a few months, and I feel like I am still discovering new ways to use it.

  6. Carl (verified owner)

    Best boost pedal I have ever owned. I like it best in front of my od, distortion, and fuzz pedals. Its helps pushes these pedals to the break up sound to each pedal. A must have for any pedal chain.

  7. seth hutchinson (verified owner)

    the doomcaster has become a major part of my sound. Im using it to slam the front of my marshall dsl, and it sounds incredible, perfect doom and sludge tones that ive searched far and wide for over the years

  8. Derek Monaco (verified owner)

    It hasn’t left my board. My favorite of the Unholy Trinity! So many uses out of a one knob boost. Try it through your return and make your pedals destroy!

  9. Meltingfaces0921

    It took a sec to figure out where I liked it best in my signal chain, but it’s always on my board now! Super

  10. Tyler (verified owner)

    This is an “always on” kinda pedal, it makes every amp and all guitars just rip! It chugs harder, makes harmonics scream! I don’t even play doom very often (mostly metal/hair metal) but it just crushes every genre! Just buy it already!

  11. Larry McDowell

    The DOOMCASTER is the loudest, most powerful clean boost pedal on Earth! Even a slight increase in the Volume control will shake the walls and rattle the foundation. It melts preamp tubes and pushes anything after it into ultimate saturation. I like to use it between dirt and modulation effects. Awesome pedal!

  12. Gabe G (verified owner)

    Perfect punch for bass solos or thunderous intros. Pedal is sturdy as a tank and takes up a rent free residence on the top of my gigging pedal board, cheers 🪗

  13. Logan Guidry (verified owner)

    This pedal is top-notch quality! I use it as a line boost / buffer at the end of my chain and it adds this wonderful “en vie” to my signal. Slight compression, a bit of top end bite, and ZERO signal loss. Solid construction and a beautiful graphic tie this rad little package together. Well done, DID. Iommic Life Complete.

  14. Arnt (verified owner)

    Doomcaster delivers the juice you need to mark solos and nail the killer riff. Highly recommended. Do not hesitate, run and buy.

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