PC audio out USB to external DAC


I'm just getting into PC audio, my plan is to output audio from the PC via USB to an external DAC, which of course then feeds to a preamp. Do I need to add an external soundcard to act as computer to stereo interface? It seems like something would be needed, it can't be as simple as just plugging in a USB cable.
Thanks for any advice!
heymikey
Marco,
Thanks for your thoughts on the HagUsb, I'll post my impressions of it later. I looked up the Waveterminal also, it looks like a quality converter with a lot of connectivity options. I may look into it at a later date. As this is my first foray into PC audio, I wanted to keep it as simple as possible.
Regarding WiFi, I recently tried out the Squeezebox 3. Sound from the squeezebox was not great, but my thinking was to connect it to the outboard DAC. I had lots of problems with the networking end of it that tech support was unable to resolve and I sent it back within the 2 week grace period. Many people rave about it, and they do offer a wired ethernet version. I'm sure my experience with it was not typical. Yup, the Airport express is another option I thought about (and the Sonos, which looks great), but my experience with the Squeezebox has kind of turned me off to the idea of WiFi for now.
I do have Itunes on my PC, I like it very much. I'm looking forward to listening to it and internet radio on my main stereo. I hear people saying that with properly done PC to stereo audio, you'll never listen to your CDP again. I have a Meridian 508.24 player that I like very much and I'm a bit sceptical of those claims. But there's no denying the convenience factor of having your entire music library, Itunes and internet radio at your fingertips.
Regards, Mike
Mike - Sounds like you've done your homework. My friends who have tried the Squeezebox route have been less than thrilled as well. I've tried the Airport Express and did like it as a digital stream through the mini-Toslink cable into my DAC. Waveterminal does it better though, but wired of course. Which DAC will you be using (or does the Meridian have a digital-in)? Should the HAG not make it for you there's plenty of alternatives. If budget is not a big consideration, I'd be looking at Empirical Audio's stuff to implement PC Audio. I had a Waveterminal Brick that I enjoyed very much. It is a USB-only DAC that uses a single 12AU7. It definitely had a very relaxed sound without a trace of digital harshness. I'd be curious to hear his much more expensive Cosecant DAC. I look forward to hearing your results with the HAG. With a Meridian 508 to compare to, it'll be very interesting to hear how things pan out for you. You probably know also that it is critical how you Rip your files to the hard drive; Preferably as WAV or in a lossless format, and make sure to have "error-correction" checked if using iTunes. If you rip music as compressed files I doubt you'll ever be happy with them if you are very discriminating.

Marco
You can use a device like an Airport Express (new version just out),

Jax, I see the new Extreme (which does not have a digital out) is supposed to start shipping next month but haven't seen anything about a new Express. Did I miss something?
Jax, I see the new Extreme (which does not have a digital out) is supposed to start shipping next month but haven't seen anything about a new Express. Did I miss something?

Nope, you didn't miss anything...I did! My bad, I scanned that email from Apple quickly and didn't read the details. Pay no attention to that man behind the curtain!

Marco
Check out the CEC DA53 DAC which has a USB connector and does the job quite well.