RunOffGroove rarely disappoint, and this modulation box is no exception.

Seeing a lack of DIY projects for true vibrato they set out to fill that gap, and a fine job they made of it too, using readily available components that don't require any fiddly matching, biasing, fairy dust or hammers to get working. The project page linked above is well worth a read.

Two simple controls - Rate and Depth. Three modes - Vibe (take a guess!), Swirl (mild two-stage phasing) and Whirl (somewhere in between, rotary speaker-ish), should give you enough variation to make the fairly large build worthwhile.

We've managed to keep the whole thing withing a 5cm square PCB so it'll easily fit into a 1590B enclosure. There are six resistors on the back side of the board to achieve this footprint, but why not eh?

There's also an optional rate indicator LED for those of you who like flashy things.

Partial kit: PCB, all board-mounted components, pots.

Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED.

Enclosure (pre-drilled) is only available with full kits, and will not take a battery. Knobs are not included.

Builds are only available with full kits including enclosure and vertical-mount pots. Please choose appropriate knobs.

Difficulty: Medium

PCB size: 50 x 50mm

Knobs required: 2

Enclosure: 1590B

Direct-Connect compatible (4-way)

If you want the kit pre-built you must add the enclosure option below and select your knobs in the Components section. Check Specials for powder-coated enclosure availability. Builds only available with vertical-mount pots.



Pedal Parts


£37.20 inc. tax

£31.00 ex. tax
? Tax based on United Kingdom.

Customer Reviews

5 review(s) posted (write review)
Kinda Weak 3 product stars
"kit works great including the rate LED, but as a vibrato its pretty weak sounding. The modulation isn't very deep at all, which is good for a subtle effect but not when you want something a bit more." Benjamin Storm - 30/05/2018
nothing special. 3 product stars
"it's a vibrato pedal. sounds good. if the pots on the BOM are used the controls on both rate and depth are bunched up full clockwise. could use a volume pot but all in all nice little trem pedal with three modes." jacobre - 02/05/2018
Volume & Tone Suck 1 product stars
"10th build from Fuzz, serious volume and tone suck - from google and RoG, build is known for this, Depth clicks when turned to full , and when turn on volume drops. disappointing" Weak Vibe - 11/06/2017
good vibes 5 product stars
"Great layout as usual. Awesome circuit! Every mode is a lot of fun to play. I needed a good vibrato and I found way more with this pedal. Thanks Dog!!" Chuck - 15/05/2017
Great Pedal 5 product stars
"My second build, I think I am getting addicted to the process I find it very thereputic. This pedal sounds amazing the three modes are versatile, some youtube vids give you the sounds which are hard to describe, I initially cocked up by putting the pots the wrong way round and found the description of the LED placements slightly confusing as the rate can be on the daughter board or the main.FD brilliant with help and patient with my emails, now looking at the next build Trem maybe." Steve Collop - 25/02/2017

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Don't forget to download the appropriate daughterboard build document for your kit:
Standard 3PDT