Greer Amps
Greer Amps Black Mountian
Here’s one of Greer’s latest offerings. Seems like a simplified OCD circuit with some value changes and different clipping diodes. Schematic for reference. Easy fit in a 1590B.
Greer Amps Soma 63 Preamp
Cool JFET preamp circuit from Greer. Its supposed to sound like a Brownface-era Fender amp. I’d be curious what it sounds like without the transformer. Should fit just fine in a 125B with top mounted jacks. Schematic for reference.
GREER AMPS: Lightspeed X Southland Overdrive, Switch Mod
So given the Lightspeed and Southland are basically the same circuit, I thought I might add a switch to swap between the two. The switch does three things; Switches the hard clipping diodes in/out Changes op-amp gain (to account for the hard clipping diodes) Changes Drive pot resistance While they use different op-amps, they’re both … Read more
GREER AMPS: Soma 63 Vintage Preamp
The Soma 63 is an amp in a box style pedal, with the usual array of J201s with trimmers replacing valves, an amp-style tone stack, and a transformer at the end of the signal chain thrown in for good measure. I added some mounting points on this, as you don’t want a board with a transformer on … Read more
GREER AMPS: Southland Harmonic Overdrive
Greer Amps have taken the Lightspeed overdrive and have made a few mods to give us the Southland Harmonic Overdrive. added a set of hard clippers after the first gain stage boosted the gain of the output to make up for the BAT41 hard clippers increase the drive pot value Could try germanium diodes instead … Read more
GREER AMPS: Tomahawk Deluxe Drive
This is a simple one from Greer Amps – the Tomahawk Deluxe Drive. It has some distinct similarities to a Rat or Distortion +, in that there’s opamp clipping, driving hard clipping diodes, and a tone control. Schematic from PedalPCB. I added a buffer on vref, as half the opamp wasn’t being used, so why not. GREER … Read more
GREER AMPS: Lightspeed Organic Overdrive
GREER AMPS LIGHTSPEED OVERDRIVE – VERO LAYOUT note: a standard TL072 can be used, the OPA is a “premium” dual op-amp. GREER AMPS LIGHTSPEED OVERDRIVE – VIDEO DEMO