Hey UG! Just recently acquired a boss sd-1 for cheap and was wondering you guys knew of any more mods i could do to it to make it more useable as a standalone overdrive.
So far, i have clipped C6 and i have switched out C3 for a 0.1uf capacitor for more bass and R2 for a better bypass signal
To be rather honest, i dont hear a very drastic change. Removing C6 definitely "opened" the tone of the pedal up, but i didnt feel like the C3 swap did much for the bass.
I would like it to have more bass/kick and just have an overall fuller sound.
What other things should i swap out? I'm pretty new to soldering but i think i have a pretty good handle on it. I didnt bother to look up any monte allums or keeley mods, i just wanted to figure out what necessary changes i could make and do it kinda custom-like. Any suggestions guys??
Just for kicks and giggles, here are a few pics of it

Bleed fix mod?
Guitars & Gear:
Parker Nitefly M
Sumer Metal Driver
Ibanez RGD2120Z
Two Notes Torpedo CAB
Here are the mods i've made so far, most of them are just capacitor changes, havent switched out many resistors yet

C1 - .047uf
C2, C7, C10 - 1.0uf
removed C6
C3 - 0.1uf
C8 - 0.1uf
R2 - 1meg
D4 - 3mm red LED
D5, D6 - 1n4001 silicon diode

I based most of the capacitor changes on this "big yeller" mod i read about on some another forum and raised R2 for a better bypass tone

This thing really kicks now! It's more capable of being used as a standalone OD with my Night Train set to a clean-ish tone.

Any suggestions on what other things I could do to it to make it even better? Perhaps any resistor changes?

I've been thinking about experimenting with a different op-amp, perhaps a TL072, LM1458, or 4559. maybe mess around with different diodes too, I'd like to keep the clipping asymmetrical, but with a smoother overall tone
Quote by Emperor's Child
Bleed fix mod?

not entirely necessary for me, I keep the gain knob around 10:00 actually. dont play with very much gain. use a booster for lead playing. plus, swapping out R2 for 1meg actually did seem to make a difference in the bypass tone for the better