Boss ODB-3 mod schematic question

[phatbass]

I want to start messing around with pedal mods and I have a Boss ODB-3 lying around. I actually like some of what this pedal does function-wise (blend, EQ), but the nature of the distortion itself is a bit harsh for me.

Could some pedal electronics people verify that the part I've circled in the schematic in this link is the part that does the actual distortion?

http://mrfabulous.customer.netspace.net.au/ODB-3.jpg

From my reading so far this seems to be the case.

I'm thinking of just messing with diode types and values, and trying deliberately mis-matched diodes for an asymmetric circuit like a Tubescreamer.

I'm also assuming that the values of the capacitor and the resistor in parallel with the diodes will affect it as well?

[B.C.]

Yes, those do appear to be the "clipping Diodes." Keep in mind that this clips the signal, but there are other means of clipping. For example, Transistors can add a type of distortion(most notably fuzz.) That being said, things you can try are adding regular rectifiers instead of LEDS, using the Collector-Emitter connections in BJTs, etc.

Hope this helps.