AWA: Model PA872, 20w Valve PA Amplifier (Serial Number 94)

AWA PA 872 front 2 725187ccd283

I posted another AWA PA872 a while back, but realised I never actually shared this one.  It had been sitting on the shelf for months – one of those projects that was nearly there, but never quite finished.  I finally got around to wrapping it up this weekend. This looks to be an earlier unit, although … Read more

CUNNINGHAM AMPS: Zonk / MKI

Screenshot 2026 03 20 141805 39088c51db1f

I came across a series of photos of this build on the PedalPCB forum, and there seemed to be a bit of confusion around the schematic.  Thought it was worth documenting some of the observed values here for reference. The board shown below is from the wedge enclosure.  There’s also a more pedalboard friendly version, … Read more

BE: MKI Tone Bender – Shorty

MKI shorty v1 706dbba2b94b

Yes, it’s another MKI.   I designed this layout based on a Zonk to fit a specific enclosure width.  So nothing remarkable, just one for me to use later. MKI TONE BENDER – SHORTY It’s missing the 33k resistor that normally sits across the 50k pot, cause I like to use an A25k instead.   I sometimes … Read more

MENATONE: Red Snapper Overdrive

MENATONE Red Snapper overdrive v1a 391effc9e85d

I’d never heard of these until this morning – and I could not believe the second-hand prices of the original…   especially considering the new price of a hand-made pedal from the builder. It’s kind of a Timmy x boutique Tubescreamer type thing – can find the schematic here.   Dual tin can opamp is required – … Read more

D*A*M: 1965 Vintage Tone Distorter

DAM 1965 TD vero layout e5c595172269

I’m surprised I had not covered this one before, but I suppose it is a MKI, so it should feel fairly familiar. There seem to have been a few different iterations — essentially just different flavours of the MKI, so keep that in mind when choosing transistors and biasing the circuit. Some versions also used … Read more