The Andromeda Overdrive project is a clone of the Nobels ODR-1, a really interesting overdrive that’s a favorite among Nashville session players but remains fairly obscure otherwise. It’s a complex circuit with a great deal of precise filtering and tuning.
The overwhelming criticism of the ODR-1 is that it has too much bass. It’s true—the corner frequency in the op-amp clipping stage is very low and the stock circuit has no way to dial it out. It pairs up very well with a Telecaster bridge pickup, but not much else.
So, for this project I borrowed the Bass control from the Timmy, which makes the corner frequency variable. With the knob all the way up, it’s the stock ODR-1, but now you can turn it down to more reasonable levels. With this modification, the ODR-1 is easily in my top 3 overdrives—and I’ve played a lot of them.