OD-2 vs SD-2

[Ricey]

Just placed an order for an SD-2 in great condition with box/manual for $100 on Reverb!

Looking forward to trying it out.

Thanks for all the advice!

[Pepe]

You won't be disappointed, I'm sure. The best mode is Remote with an external footwitch.

[Ricey]

Are the two circuits in the SD-2 similar to any other well-known OD's or distortion; e.g. OD-1, SD-1, OD-3, Bluesbreaker, Governor, DS-2, Rat, HM-2, etc?

[chromandre]

Actually yea I think of the SD-2 is a lot like having the guvnor in a boss pedal ... it uses LEDs as clipping diodes , I think that gives it certain range of lower gain tones that are still edgy and then the higher gain tones that are still dynamic.

[Ricey]

Oops...double post!

[Ricey]

So, is the OD mode similar to a Bluesbreaker pedal and the lead mode similar to a Guv'nor or is it more like a dual mode Gov'nor with low and high gain modes?

[Pepe]

While rescueing some threads of the StompBoxZone forum I stumbled over this post:

Does anybody know what the 'lead' mode circuit is based on? Marshall Govn'or ?

It's a custom Boss design. The input resembles a bit the the boss MT-2 (gyrator booster at 952 Hz followed by two stages of opamp amplifiers).

After that there are two stages of clipping, shunt leds and asymmetric feedback like in OD1/SD1 at fixed gain (2x), followed by more fixed filtering and gain (3x).

The tone stage is similar to BD-2/OD2/OD3 followed by level knob and a buffer.

Did your SD-2 arrive in the meantime?

[Ricey]

Yes, arrived, but I have not had a chance to try it yet. Very clean with box and manual in great shape...almost mint!

[Pepe]

Then the price is absolutely justified. I received my very clean looking SD-2 from Dirk in one of our pedal tours.

[Ricey]

I have been scoping out OD-2r's as well. They seem to be going for more $ than the SD-2. I think with my SD-2, JB-2, OS-2, and a OD-2r on a board, I would have just about any OD need covered!

Is the OD-2r similar to the OD-3; i..e., no pronounced mid hump and wider frequency response? My OD-3 doesn't seem to cut out bass like my SD-1 or TS variants, while my BD-2 is REALLY bright (I have to run it with tone knob almost fully counter clockwise) and also a bit mid scooped. OD-3 sounds much more neutral. That is a nice sound to have as well!