By popular demand, here's the PAL 800, a well regarded Marshall-in-a-box circuit. Should fit nicely in a 125B. Schematic here . All the...

This is been traced for a few weeks now over on FSB and I've meant to lay it out since then, but just now getting around to it. If you ...

Here's another Plexi-in-a-box overdrive, this time from the great Robert Keeley. It's a cascaded opamp design running on a bipolar +...

Gotten a couple requests for this one. Here's Bajaman's second take at his AFD circuit with a better frequency response than the fir...

This one was requested ages ago and I got halfway through laying it out, and then promptly forgot about it. It's a power amp/speaker cab...

Got a request for this one. Another AC30/Rangemaster emulator to try and get Brian May's tone. Here's the schematic for reference. ...

Another Marshall-in-a-box, the Ms. Foxy Brown uses 3 J201s and feels a lot like an older Run Off Groove design (though it's not). As per...

Came across this one and it's an interesting JFET-based OD with active bass and treble controls. It's apparently based on a late-60s...

Got a request for this one. It's apparently a modified Bogner Ecstasy Red, which is a JFET adaption of the Red channel on the Bogner Ecs...

Here's Baja's AC30 Normal Channel emulator. Throw a treble booster in front of this and you're pretty darn close to nailing some...

Another one of Bajaman's many amp emulator circuits. It emulates the frequency response of the classic Vox AC30 top boost channel, inclu...

The Catalinbread WIIO is a Hiwatt amp emulator specifically going for the sound of Pete Townsend's Hiwatts on the Live at Leeds album. (...

Here's a newer version of the Marvel Drive from Ramble FX. Did the first version of this circuit a couple years ago, and decided to upda...

This is Jack Deville's Marshall-in-a-box emulating a 1974X 18-watt combo amp. Tracing credit goes to Ralf Gottschalk, who has a nice lit...

Another drive circuit from Bajaman. He's been on a tear lately! In his words... Here is my latest build based on the frequency respons...

Here's Lovepedal's Jubilee–pretty close circuit-wise to the Purple Plexi and Black Magic. Should be a pretty quick build. Note, if i...

zVex's new '59 Sound looks to emulate an overdrive '59 Fender Bassman amp and is essentially a tweaked Box of Rock. I've lef...

Here's another one from Bajaman. It's a modified version of his AFD, but tuned to sound like a Soldano amp high gain channel. There ...

I know I've mentioned this to a few people over the past year probably, but I've finally been able to get it edited. That's righ...

Not sure how/why I avoided laying this one out for so long. The Azabache is a great sounding overdrive that emulates classic Fender amps. Ch...