EA Tremolo

Hot! EA Tremolo

Fairly simple but nicely effective tremolo kit.

A lot of trems use expensive optocouplers or require some fiddling with LED/LDR combinations to make them work, but this does all the magic with a clever combination of transistors.

Rate, Depth and Volume controls, and the LED flashes to indicate the rate. Bonus!

This latest version of the PCB is set up for vertical-mount pots to make it a really quick and easy build. The vertical mount pots have round shafts, so take that into consideration when choosing your knobs - you'll need a grub-screw fixing. You can go for 'normal' pots with splined shafts and wire them or use header pins to attach them.

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 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: Easy-Medium

PCB size: 50 x 25mm

Knobs required: 3

Enclosure: 1590B

Direct-Connect compatible (4-way)


Download the older version here


Pedal Parts



£27.60 inc. tax

£23.00 ex. tax
? Tax based on United Kingdom.

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Full kits DO NOT include enclosures unless you select them in the 'Kit Type' drop-down menu.

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