AW: [sdiy] discrete SSM2018?

[Czech Martin]

Well, I've listened a lot to the 2218 chip, and I couldn't
hear anything unpleasant. I mean there was attenuation,
or not, as desired, and that's all, no artefacts,
almost ideal. Since the device could take 20Vpp
I never got it into distortion, so I never experimented
with that. Certainly distortion would be no good
application because of sharp clipping anyway.
I just wanted a near to ideal vca for audio
and dc voltages at the same time.

m.c.



> In fact, I have heard complaints about the sound of such,
> or similar, VCAs from people who use them and don't necessarily
> know about the feedback issue (which otherwise might cause some 
> preoccupation), so we *might* (and I *do* have some preoccupation
> here!) get a VCA with excellent specs in the end, which has
> an unpleasant sound quality. But note the "might" - it's surely
> an interesting idea to follow.