How to configure a PC for outstanding Audio?

Interesting suggestions by Stateradiofan. As someone who builds his own computers, I can second the thought that Corsair power supplies are among the best. They also tend to be remarkably quiet acoustically.

The Tascam US-144 looks like something which provides a lot of capabilities and features for its $135 cost (at B&H)). Would I be correct in assuming that you are using it as usb in and spdif out, and if so that it does that conversion purely in the digital domain, without a d/a and then a/d conversion?

Also, I'd imagine that a major benefit of going fanless, and also of underclocking the cpu, besides minimizing power draw, would be reduction of emi/rfi (electromagnetic/radio frequency interference) that might couple through the cabling (or the air) into the dac. Running without fans would increase the operating temperature of the cpu and other digital chips on the motherboard, which would tend to slow down their risetimes and falltimes (and propagation delays as well, perhaps making the underclocking necessary), which would reduce digital noise that could increase jitter and/or couple into analog circuits in the dac.

Regards,
-- Al

Stateradiofan,

Wow -- very interesting suggestions. Could you describe the rest of your computer: Mobo, CPU, Case, etc. everything?

Dave

Al,

I do use the Tascam US-144 as a USB to SPDIF converter. It was works well in my setup with great sound. As far as I know there is no d/a or a/d conversion with this unit if you are sending out via SPDIF. It does include analog out but I wasn't interested in using it as a DAC.

I was considering the offerings from Empirical Audio & Bel Canto but I decided to wait for a 24b/192khz model before I drop $500+ on a USB converter. So In the meantime I am more than happy with the US-144 considering its bargain basement price.

Interlochen,

My PC Specs are...

Intel E6300 CPU (considering a 35w Celeron 430)
XFX Nforce 630i Mobo (not the best board for audio, may replace)
1TB Western Digital Caviar Green HDD
AZiO ENC311SU31 HDD Enclosure
G.SKill 1GB DDR2 PC6400 (underclocked to 600mhz at CAS 3 Latency)
Corsair HX850 PSU (excellent low ripple & dc ouput)
Thermalright AXP-140 Heatsink
Omaura TF8 Aluminum Case (Company may have gone bye bye)

You should also check out the cics guide "The art of building computer transports" which you can find at http://imageevent.com/cics/v03theartofbuildingcomputertrnsp I didn't follow the guide step by step but some of the recommendations helped me with my system.

Isolating the pSU from the PC case also helps (nice rubber grommets) as well as a good power cord and a line conditioner. Also, if using an internal CD player (I don't-I use an external Lacie), also isolate CD from from case w/grommets as well as any internal hard drives. Supporting the PC on isolation device also helps (check out mapleshade PC isolation) -hey, if going all out, why not? For external drives, I place them on symposium fat pads. I use firewire out, though, as USB is too cpu dependent.

Cerr, Al, Strat, I've printed these posts out, so significant is their worth. Thanks. I've been building PCs for years too but must get away from thinking simply windows platform and towards Audiophile gear.
Dave