If you mean cards which support a four-channel data stream, that's the
whole point - there don't seem to be any. I am expecting the Analog card
to do just that very soon; but of course that is not a commercial
soundcard as such, until a manufacturer takes it up.

On the other hand, there is now a wide range of 'multi-device' cards,
where 1 device  = stereo - the Event range, Emagic Audiowerk, Terratec
EWS, etc. You will need to refer to their web sites for specs. In many
cases, the only thing preventing these cards handling 4-channel data is
the lack of support in the driver, because it has never ocurred to the
developer to provide it.

Cards will operate in any computer system into which they can be fitted
- IF drivers are available. DOS, yes, in some cases, to support games;
linux - almost certainly not, unless some independent party develops one
(unless anyone knows otherwise?). FM chips - depends; the Terratec has
one, the Event ones, as far as I can tell, don't. Any cards which claim
to be 'SoundBlaster compatible' or 'games compatible' should have one.

Jim Stevenson Ph.D wrote:

> I would appreciate a list of 4 chanel cards with some specs.
>
> Will they operate under dos or linux?
>
> Do any have fm synth chips?
>
> Thanks.