Newbie seeking the best sound quality

[DirectViewer]

Would the SB3, or the Transporter, be a sonic improvement over my current setup? I play WAV files directly from my PC to a digital input on a Theta Casablanca 3 with Extreme DACs.

My "sound card" is a Realtek AC '97 chip on the motherboard, and its only digital output is coax. I don't know whether it resamples or not.

The cable is a 50ft 2X shielded OFC RG6 cable with gold-plated connectors from monoPrice.com. There is no hum or audible noise.

The Theta is plugged into an EquiTek balanced power conditioner and is (I think) isolated from the AC circuit into which the PC is plugged.

Because the Theta DACs are so good, I would expect to use the S/PDIF output on the SB3 or Transporter.

Any advice will be gratefully received. Thanks!

[tomsi42]

If you are using windows, it is a big possibility that you aren't getting the best sound possible. Windows does some processing to the files before they go the the DAC.

In your case, I would recommend the SB3, and that you convert your music files to FLAC or Apple lossless. This is to embed the artist name, track, name etc into the music files (as well as takes less disc space). Use Apple lossless if you are using iTunes, otherwise use FLAC.

Another benefit is that you don't have to place the PC near your stereo.

Tom

[peejay]

Generally. moving audio reproduction circuits away from any possible interference is a first move to improving sound quality.
The humble act of moving power cables away from source or speaker cables in a stereo setup, for example, can in some cases make an audible difference. In the case of a PC, the RF (Radio Frequency) influence on the soundcard is likely to be significant, and an on-board chip and audio stage is likely to suffer even more so.
I echo Tom's advice of the Squeezebox setup, as a first measure.

[probedb]

As far as I'm aware AC'97 requires that all signals are mixed to 16-bit 48KHz? In windows it's possible to bypass kmixer which does this nasty stuff but it maybe that your onboard sound does this as well...i.e. all Creative cards do this in hardware.

Unless you're doing things like bypassing kmixer I doubt your PC is passing untouched digital signals to your DAC.

I'd say the squeezebox will give better quality, but like everything it's subjective as to whether or not you can actually tell the difference.

[peejay]

As far as I'm aware AC'97 requires that all signals are mixed to 16-bit 48KHz? In windows it's possible to bypass kmixer which does this nasty stuff but it maybe that your onboard sound does this as well...i.e. all Creative cards do this in hardware.

Unless you're doing things like bypassing kmixer I doubt your PC is passing untouched digital signals to your DAC.

I'd say the squeezebox will give better quality, but like everything it's subjective as to whether or not you can actually tell the difference.

I Agree, it is all subjective - in the ears of the beholder, so to speak. Computer and audio delivery technologies are inevitably merging, but discreet audio devices such as the squeezebox, still have the edge, IMHO.

[tomjtx]

Would the SB3, or the Transporter, be a sonic improvement over my current setup? I play WAV files directly from my PC to a digital input on a Theta Casablanca 3 with Extreme DACs.

Any advice will be gratefully received. Thanks!

Why not buy a TP direct and get a free SB3?
That way you can compare both. If you don't think the TP is better, sell it for 1,700
and break even. There are plenty of people who have SB's that would love to get a TP for 1,700.
But please try the TP without the Theta for at least a week. Don't assume the Theta is better. You might be surprised and end up selling the Theta.

[probedb]

I Agree, it is all subjective - in the ears of the beholder, so to speak. Computer and audio delivery technologies are inevitably merging, but discreet audio devices such as the squeezebox, still have the edge, IMHO.

I agree with you there. Takes some very high quality sound cards to get the quality analogue out from a PC Digital is easier but usually a bit messier due to Windows messing with the audio without you asking.

[DirectViewer]

If you are using windows, it is a big possibility that you aren't getting the best sound possible. Windows does some processing to the files before they go the the DAC.

In your case, I would recommend the SB3, and that you convert your music files to FLAC or Apple lossless. This is to embed the artist name, track, name etc into the music files (as well as takes less disc space). Use Apple lossless if you are using iTunes, otherwise use FLAC.

Another benefit is that you don't have to place the PC near your stereo.

Tom

Thanks, Tom. I play WAV files with Foobar2000 (http://www.foobar2000.org/) using the "kernel streaming" option, which bypasses Windows and sends the output directly to the sound chip.

FLAC sounds like a great idea. I will definitely look into it.

[DirectViewer]

Generally. moving audio reproduction circuits away from any possible interference is a first move to improving sound quality.
The humble act of moving power cables away from source or speaker cables in a stereo setup, for example, can in some cases make an audible difference. In the case of a PC, the RF (Radio Frequency) influence on the soundcard is likely to be significant, and an on-board chip and audio stage is likely to suffer even more so.
I echo Tom's advice of the Squeezebox setup, as a first measure.

Thanks, peejay!

[DirectViewer]

As far as I'm aware AC'97 requires that all signals are mixed to 16-bit 48KHz? In windows it's possible to bypass kmixer which does this nasty stuff but it maybe that your onboard sound does this as well...i.e. all Creative cards do this in hardware.

Unless you're doing things like bypassing kmixer I doubt your PC is passing untouched digital signals to your DAC.

I'd say the squeezebox will give better quality, but like everything it's subjective as to whether or not you can actually tell the difference.

As I replied to tomsi42, I seem to be bypassing kmixer, at least for WAV files. (I didn't know it until I saw your postings and checked.) Of course, that doesn't apply to Pandora.