Got a little simple boost/preamp for your Thursday. Should be a pretty easy fit in a 1590A. J113 alternatives would be J201, 2N5457, and pro...

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...

Happy Fuzz Friday, everybody! Here's a new fuzz circuit from DOD. It's a cascaded transistor design offering a wide range of tones ...

Not a lot out there on this one. It's a optical noise gate DOD produced in the late 70s and works best at the beginning of your signal c...

I really enjoyed making the Big Muff Project file a couple months ago and thought it would be fun to make a similar project based on the MXR...

The FX25 was initially produced by DOD in the early 80s and is an OTA-based envelope filter/auto-wah. It's a fairly tweakable and you ca...

The DOD 280 was DOD's first compression pedal made in the late '70s through the '80s. A great sounding compressor, this fairly s...

The original DOD units had "balanced" XLR output as well as the normal 1/4" jack and no footswitch. This has been adapted for...

Last post of 2014. Happy New Year, everybody! Here's the early 80s DOD FX55 Distortion, without the original switching circuit so you ...

Here's the grey spec DOD Overdrive 250 that fits in a 1590a enclosure. You could also build a yellow spec 250 or the MXR Distortion + wi...