Systech Overdrive
Here is a simple layout for a nice pedal from the 70’s. The schematic I’ve used is available here.
Overdrive
Keeler Push
Here’s a recent trace from over on FSB. It reminds me of a Timmy with a fixed bass control and modified second op amp stage. Nice alternative to a Tube Screamer.
Aeon Drive v2
Nice hotrodded son of Tubescreamer circuit. I thought we’d want this here too. There are audio clips for this circuit up at guitarpcb.com, as well as build docs. I’ve added a series polarity protection and a 47p cap in the feedback loop. If one desires, both can be left out.
Hermida Audio / Lovepedal Dover Drive
Recently traced at FSB. (Now this should be ok… edited 4.7.2017)
Madbean Turnabout (JHS @/MI Audio Crunchbox)
Let’s build the Madbean Turnabout (a.k.a. JHS Andy Timmons clone). I got the chance to play the JHS @ (Andy Timmons) at the Chicago Music Exchange a while back and it sounded pretty freaking good. It had a nice, thick overdrive/distortion and the clipping options made pretty drastic changes which was cool. So when a vero … Read more
Keeler Designs Push
We do get quite a lot of requests to post the schematics with the layouts. Please note that we can’t do that unless it’s our own work. We may link to a forum thread etc. but we cannot post other peoples work witout their permission. This is the reason for not posting schematic files. Once … Read more
Rockett 10 Ton Hammer
This appears to be Rockett’s take on the Marshall Guv’nor, but with a few modifications. The tone control of the Guv’nor has been replaced with a Baxandall EQ tone stack and the output is boosted with a JFET gain stage (much like Rockett Flex Drive). Should fit nicely in a 1590B with board mounted pots.
Castledine Electronics The Wizard
Here’s another take on the cascaded JFET overdrive design. This has a similar goal to the Catalinbread Sabbra Cadabra in trying to sound like Tony Iommi with a treble booster feeding a tube emulator. The Wizard is… A new distortion pedal, inspired by Tony Iommi’s guitar sound on the early Black Sabbath albums. It is … Read more
Tubeworks Real Tube 903 Modded Tone Stacks
So as most of you guys know when I’m studying for exams I tend to do a bunch of layouts when taking breaks to keep my sanity. So since I did a layout for the Tubeworks 903 I thought to myself if it’s basically a tube pre-amp I thought why couldn’t the tone stack be … Read more