What is the BEST sound card to use with a MAC G5

I want to build a music server with NON TOSLINK output, so I want the best digital output sound card for my APPLE MAC G5, I intend to import my cd collection in lossless format and I want the best output possible to my DAC, or possible a great sound card that has a DAC built in so I can go direct to my linestage preamp or direct into my power amp.

Any info appreciated.
Have a look at the Empirical Audio products, they sound way better than any soundcard I have ever come across - I am talking about the Off-Ramp Turbo. Since I know nothing about Macs I don't know if the wired off-ramp can work for you but the WiFi one will. Believe me, the Off-Ramp and a computer beats every CD transport I have tried. Running the off-ramp on battery power is recommended too.
There's a small problem with current generation soundcards. The best ones are designed for professional use and they are multi channel designs. They end up being more complex then any audiophile would require. That said you can get excellent sound quality from cards by Apogee, Lynx or RME.
To my knowledge there aren't any good sound cards for high end audio. Get a dac with either usb, firewire or ethernet. If you need spdif, something like the off ramp (usb=>spdif) would work, but direct usb is better.
What DAC are you currently using? I have done exactly what you are intending, ripped cds in apple lossless to a 750GB external HD and Mac iBook G4 which then goes via USB cable (Kimber) to a Paradisea + USB DAC then to preamp (Supratek). The sound is superb. You will encounter some here that say it isn't that easy, in my case yes it was just that easy.
Is there even such a thing as a sound card for Macs? It's all built in.
DWR and 4est are both right.

No sound card especially on a Mac. If you insist take a look at the pro audio offerings from Apogee and the like

If you already have a DAC you like, what you will probably need is a USB to SPDIF box - Blue Circle and Hagerman both make them (among others) - so you will come out of the Mac via USB, go to the box, then come from the box to the DAC via SPDIF or Toslink.

FWIW if you get the right Toslink cable (ie Wireworld SuperNova 5) G5 to DAC is great - I ran one into a TriVista for a few years, no complaints.

If you need a DAC, then a USB DAC is the way to go. Take a look at Wavelength Audio, Apogee, Paradisea and too many others to mention. The best units are the ones that go USB into I2S with no SPDIF interim stage.

All very easy and the results are great. Just make sure you check "Error Correction On" in the iTunes preferences.
Myrtle - The Off-Ramp Turbo 2 works the same with Mac. Supports 24/44.1, 24/88.2 and 24/96.

Steve N.
Empirical Audio
Thanks Steve, then I would recommend the OP look at the Off-Ramp Turbo 2. I have had the Wavelength and the Hagerman equivalents, and they are not remotely comparable soundwise to the Off-Ramp.
Myrtle - I appreciate this feedback as I dont have either one of these to compare for myself.

Steve N.
Empirical Audio