This pedal mirrors the Dumble amplifiers in many ways. The Holygrail Overdrive is a simple, somewhat homely looking pedal, and its knobs and jacks appear to have been labeled with a garden variety label-maker. The controls are Drive, Accent, Tone, and Volume, and features a Round/Open/Sharp voicing switch. HiCut switch for using the pedal in front of bright sounding amps.

Absolutely next level when it comes to sweet, touch-sensitive overdrive and impeccably clean, transparent boost. The Dumble-like tones that come out of these little stompboxes is unreal! The controls are extremely responsive and allow for a massive spectrum of tonal options, all of which are completely usable.

There is quite a bit of headroom in this pedal it can be used as an organic boost to a full on Overdrive Special!