[LAU] What audio interface to use for a Linux-powered surround preamp?

[Charles Henry]

On Wed, Dec 14, 2011 at 7:59 PM, Johan Herland <jherland at gmail.com> wrote:
> Hi,
>
> (TL;DR: skip to "The main question...")
>
> I'm planning a hobby project to build an all-digital surround/hi-fi
> system. Regular surround/hi-fi systems convert digital input sources
> to analog in the surround processor/preamp, but I want to keep the
> signal in the digital domain as far as possible (by using all-digital
> class D power amps, aka. "PowerDACs" [*] that convert a PCM signal to
> an amplified PWM signal that is feeds the speaker directly through an
> LPF.
...
> [*]: Examples of all-digital power amps include the NAD Direct Digital
> amps (M2 and C390DD), the Tact True Digital Amplification series, etc.
>
> --
> Johan Herland, <jherland at gmail.com>
> www.herland.net

Hi Johan

I have previously looked for such a product, with no luck--I started
to believe that no such thing existed!  Do you have any more examples
that I could check out?

Chuck