Roland AF-60 BeeGee

Roland BeeGee 2cc1c65d8c2b

Happy Fuzz Friday, all. Somehow in 10 years of laying out fuzzes, I’ve never done this one. Here’s the  Roland (pre-Boss) AF-60 BeeGee fuzz. Originals use semiconductors you probably don’t have in your parts stash, but nothing in mojo territory, so modern equivalents will work just as well. Fairly simple circuit with a couple transistor … Read more

Boss SG-1 Slow Gear

Boss Slow Gear eba510e06577

 The Slow Gear emulates a guitarist riding the volume pot or a volume pedal, creating a swell effect. This will fit comfortably in a 1590B or 125B, though with the 1590B you’ll probably want to wire the pots off board or use long-leg right angle pots mounted on the component side. Here’s the schematic for reference.

Boss OD-1

Boss OD1 quad 1d26bee43470

This is the precursor to the SD-1 and the TS808. The OD-1 was built by Boss from 1977-1985 and made in 2 versions. Both version are very similar in circuit topology—buffer > gain/soft clipping stage > gain stage > buffer—but the early version used a quad opamp, while the later version used a dual opamp … Read more