Tube Works Blue Tube

Came across John K's vero of this circuit with a few mods (Mid pot, bipolar charge pump) and figured we needed a layout for it as well. Runs on 9-12v. Pots are all board mounted with the tube off board. Here's John's original layout.

Fulltone Ultimate Octave

Happy Fuzz Friday everyone! Had a request for this one. It's basically a Foxx Tone Machine with some value changes and a couple additions, namely a switch to shift the range of the tone control and the octave switch is a footswitch. Here's the schematic for reference.

DOD FX91 Bass Overdrive

Always need more bass effects, right? This was one of the first bass ODs to have a clean blend. Should be an easy fit in a 1590B. Here's the schematic for reference.

OKKO Diablo+

The Diablo is a modified BSIAB circuit and the Diablo+ version has an added boost at the output that's independent from the main overdrive circuit. I've laid it out for a 125B with top mounted jacks for a nice small footprint. Originals have a switch to run at 9 or 18 volts which I've left off-board so builders can choose their preferred voltage doubling method. Trim pots are extra controls, not for biasing, FYI.

Boss FA-1 FET Amplifier

Originally a bit of a flop from Boss, the FET Amplifier was made famous by U2's The Edge. It features a 2-band Baxendall tone stack and the Volume control is more like a gain control. Originals use 2 single opamps that are pretty hard to come by these days, so they've been replaced by a dual opamp. Pots are board mounted and it should all fit in a 1590B.

Prescription Electronics Clean Octave Blend

Got a request for this one for Fuzz Friday. Originals fetch crazy prices online. It's an octave fuzz with a clean blend. If you want a fabricated version of this, check out the Corn Cobb on the store.. Schematic over on FSB. Should squeeze nicely in a 1590B.

Lovepedal Super 6

Here's a simple MOSFET overdrive from Lovepedal. Should be a quick and easy build in a 1590B. The board is designed to fit vertically in the enclosure with this kind of pot soldered on alternating sides of the board (Intense and Volume on the component side, Tone on the solder side). Oh, and the electrolytic caps are just lying flat, but not axial types. Schematic, notes and even a 1590A layout here. My layout below is so symmetrical I had to get a fabricated version on store... Here's the description from Lovepedal:

Reminiscent of the mid 60's Blackface Fender era. Specifically a Blackface Super on 6.

Plug the Super 6 in to a ANY clean amp to nail that mid-60's American amp tone. This unit will turn a small amp into a much larger sounding amp instantly.

With an onboard vintage tone stack to die for, you now have ULTIMATE control over ANY guitar / amp / effects combination.