The KHDK In Waves is a limited-edition clean boost pedal built by KHDK with Trivium guitarists Matt Heafy and Corey Beaulieu, and named after the band's 2011 album In Waves. KHDK calls it "the most insane amp-booster KHDK has ever built" and describes it as a limited metal tone shaper inspired by the album12. It was limited to 333 pieces and is listed as out of stock on KHDK's site1.
The In Waves is a limited run of 333 pieces and KHDK's product page lists it as out of stock, so it is no longer available new from the maker1.
What it is and who built it
KHDK and Trivium announced the pedal in March 2022 as a collaboration, with the company designing the clean boost with the help of Heafy and Beaulieu2. gearnews.com's report described it as "the most insane clean boost" ever2. Each pedal ships with a certificate signed by both Matt and Corey12.
It sits in KHDK's line of artist collaborations, which includes the LCFR overdrive/boost for Behemoth's Nergal and the SGT D boost/preamp for Scott Ian of Anthrax. For more of this kind of circuit, see the site's page on boost pedals.
Controls
The pedal goes beyond a single-knob boost with pre-bass and treble shaping around the output control1.
| Control | What it does |
|---|---|
| BOOST | Controls the amount of output volume. Warning: the output gets loud on the max setting. |
| BASS | Your pre-bass control. In the center it's neutral, clockwise it's boosted, counterclockwise cut. |
| TREBLE | Controls the amount of high frequencies. The center point is neutral, clockwise boosts the highs, counterclockwise cuts them. |
gearnews.com confirms the Boost knob controls the output volume2.
Power and bypass
KHDK says to use a 9V power source and that no more than 10V can be used1. gearnews.com reported the pedal will run on 9 to 18V power2, so the two sources disagree on the upper voltage limit; the maker's own guidance is the safer figure to follow. When the In Waves is off, KHDK states it is true bypassed and has no effect on your tone1.
Build and availability
KHDK states the pedal was built, silk-screen printed and guitar-tested in the company's Prague Custom Shop1. The run of 333 pieces was announced at a USD 249.99 RRP in March 20222, and the pedal is now listed as out of stock1.
Videos
Matthew kiichichaos Heafy
Scott Bynoe
ChoptonesOfficial
Questions
How many KHDK In Waves pedals were made?
The In Waves was limited to 333 pieces worldwide. KHDK's own product page states it was limited to 333 pieces only, and gearnews.com reported the same run of 333 at the March 2022 announcement. The pedal is listed as out of stock on KHDK's site, so the run has been sold through.
Is the KHDK In Waves true bypass?
Yes. KHDK states that when the In Waves is off, it is true bypassed and has no effect on your tone. gearnews.com's report on the pedal also confirms it is true bypass.
What does the Boost knob do on the KHDK In Waves?
The Boost knob controls the amount of output volume. KHDK includes a warning that the output gets loud on the max setting, so it is worth easing the knob up rather than rolling it straight to maximum.
Why is the pedal called In Waves?
The pedal is named after Trivium's 2011 album In Waves. It was designed with the band's guitarists Matt Heafy and Corey Beaulieu, and KHDK describes it as a limited metal tone shaper inspired by the album.
What voltage does the KHDK In Waves run on?
KHDK says to use a 9V power source and that no more than 10V can be used. gearnews.com reported the pedal will run on 9 to 18V power, so the two sources disagree on the upper limit. Follow the maker's 9V guidance to be safe.
Sources (2)
- In Waves Trivium limited clean boost pedal by KHDK, KHDK Electronics
- KHDK and Trivium collaborate on new In Waves clean boost pedal, gearnews.com, 2022-03-11









