Abasi Pathos Distortion
Turned out a bit big but it will fit in a BB enclosure… Based on the schematic avaiable at PedalPCB.
Overdrive
RCA: BA-31C Preamp, Vero Layout (The Balmoral Broadcast)
The RCA BA-31C would have been found in broadcast consoles of the day (late sixties), as a microphone preamp module. I think it may have been the starting point for the Hudson Broadcast, as they look quite similar and I’ve heard some references made to RCA. If it is what they used, I can … Read more
Blackhawk Amplifiers Morgul Boost
Here is a heavy dirty booster that will melt your Orange, Green or Sunn amp head. And your one knob fuzz will love it.😈. The gain range goes from a fairly clean boost to a hairy and fuzzy overdrive. “Transparent” it is not… It is a fairly simple circuit that boost the whole sound spectrum … Read more
Nobels ODR-S – Special Overdrive
Another overdrive from Nobels which shares a similar topology as ODR-1. But this one appears to a have a bit more gain on tap and a more flexible eq section. The mid control is powered by a transistor gyrator while the Lo and Hi controls are Bandaxall. And the hard clipping diodes are germaniums so … Read more
REVOX: A77 Input Amplifier Clean Boost, Overdrive / Light Fuzz
This is the input amplifier from a Revox A77 reel to reel (circa ~ 1967) – which also happens to be almost identical to the mic preamp in Trident A-Range mixing consoles from the early seventies. So far out of the preamps that I’ve been working on, which is the Neve, RCA and this, I’m … Read more
Sobbat DB-1 Drive Breaker
Schematic avaiable at PedalPCB. Note that this layout is sligtly modified. The buffer bypass switching is subbed for normal true bypass.
Nobels ODR-1
An old german overdrive that has become almost a cult item. It has a very well designed circuit with lots of sensible filtering and a higly tweaked gyrator powered tone control called “Spectrum”. Some “bouteek” pedal companies has started making their own variants of this circuit, the most noticable ones are Wampler Belle and Rockett … Read more
