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.
It's missing the 33k resistor that normally sits across the 50k pot, cause I like to use an A25k instead. I sometimes make a few other taste related changes, depending on the transistors, etc.
One that I've probably overlooked a little, given its place in the early history of English fuzz pedals - which was likely inspired by the Maestro...
There was a three-transistor version prior to this called "Fuzzy" which by all accounts is a Maestro. The later versions dropped the input buffer and made the jump from 3 to 9 volts.
These are gated nasty wonders of the fuzz world.
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 - hope this is the layout you were looking for.
One of my projects - just a MKII layout built to suit a particular enclosure and layout style that I've been working with lately.
The board is just the right size for this enclosure. Most of the assembly is done on a wiring jig first, before transferring it into the enclosure - would be a nightmare to do it any other way.
Sounds pretty good. The OC75 adds some texture without the need to go all out and use three of them. They're a little expensive for that these days. The OC84 are pretty decent.
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 the more familiar point-to-point MKI style board.
I found on the D*A*M forum that the Super Zee switch boosts the output. D*A*M uses a rotary for this, but I just put a regular switch on the layout.
Quotes from Dave Main re the side switch:
Basically it cuts the output limiting resistor in half, from the stock 2.2 Meg down to 1 Meg. The first batch of the new 2015 1965's that went to Joe all had approx 1.5 Meg limiting as stock and the Super Zee bypassed it entirely.
Also worth noting from another post: What no side switch? This is correct. It was making my tuning of the pedal a little erratic at times.
I have not listed transistor types, because they varied, and the chances of you having the exact same transistors D*A*M used — and for them to sound great in a MKI anyway are fairly small. Even from reading posts on the D*A*M forum, Dave appears to have moved away from using 2 x OC75s in this circuit because they were less stable than other options - and you can be pretty sure that D*A*M has a larger selection of transistors to choose from than you or I.
So this looks like one of the D*A*M one-offs from back in the day - a MKI style fuzz, using a variation on a Zonk layout. There are some departures from stock values, some of which are not entirely clear.
Here's the thread from an old FSB post. Here's the thread on the D*A*M forum.
