English Channel - Vox Top-Boost In A Box

From the excellent project at Run Off Groove, here's a box of Vox that, erm... rocks!

Based on a '61 Vox AC30 Top Boost, this overdrive gives all the rich, sparkling break-up of that classic amp.

Highly tweakable tone with Volume (Gain), Bass, Treble, Treble Cut and Master Volume controls, and trim pots on all the FETs for perfect biasing. All in a package that'll fit a 1590B.

WARNING: This circuit requires precise biasing of the FETs, so a Digital Multimeter is required. It'll be all-but impossible to do it by ear, hence the difficulty rating.

Pot spacing is 21mm - take that into account when choosing your knobs.

Board-mounted pots for minimal wiring and easy enclosure mounting.

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.

Difficulty: Hard

PCB size: 100 x 22mm

Knobs required: 5

Enclosure: 1590B



Pedal Parts



£38.40 inc. tax

£32.00 ex. tax
? Tax based on United Kingdom.

Customer Reviews

2 review(s) posted (write review)
Why's this not called vox in a box? 5 product stars
":(" George - 18/06/2017
Vox in a box 5 product stars
"This kit is amazing. It sounds exactly like an early 60'ies Top Boost, incredibly dynamic and sparkly. I have A/B tested the pedal on a EH 22cal power amp against an original 63 Top Boost, and it's very hard to tell the difference on low to medium volume. I built 2 of these for a musician friend and he uses them to make his Vox AC30CC sound like a proper AC30. Easy build, the biasing takes some patience. Very clean pcb layout and minimal offboard wiring." Tjærand - 26/03/2014

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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