Vintage Simmons Drums (UK) Users Group

> The PDF on simmons-synth.net is definitely for the SDS-3.
> The SDS-4, or SDS Combo as it was also known as, is a 2 channel version
> without the special effects channel.
>
> Tom W.
>

Ah, yeah.  Helps if I actually read it.

I'm going to have a crack at building the oscillator stage on veroboard at
some point over the next week, if I get time.
Gordon.