Mac vs. PC differences to Airport Express?

Toslink is a digital interface and is not audio it is pure digital read off the disk converted to "light pipe" and shipped out, thats it, only data ready to be read by a down stream device.

I did not say it was an audio signal, did I? I'm not sure what you're trying to say. The signal has to carry timing and content, and you are converting it from one language to another, and then back to yet another when it reaches the DAC. I don't know that much about this stuff, but my experiences suggest to me that every stage of the road from one point to the next may effect the outcome, and that it's best to do as few conversions as possible. Are you suggesting that because it is not an audio signal that it is not vulnerable to any degradation/errors in transport and conversions?

Marco

Thanks for all of your advice, guys. I have decided to get a Trends UD-10.1 USB converter for now. I will use my iBook laptop attached to an external hard drive. I will go

Mac iBook >Trends USB converter > S/PDIF cable > Benchmark DAC-1 > analog out > Musical Fidelity A5 Integrated > speakers.

Down the road I will either mod my existing Benchmark DAC or upgrade to a USB DAC, but for now this looks like the best way to improve my sound greatly for just $150.

The only question I still have is what cable format to from USB converter to Benchmark DAC. I can use my existing Stereovox HDXV S/PDIF to BNC cable
or
I could use an XLR cable between the two.
Any feedback on that?

I would use XLR first any maybe compare to see what sounds best.

Jax2,
I agree the more steps along the path the more chances to signal derogation. I think light pipe is less suspetable to problems than electrical signals and can cary 8 channels of 24/96 audio, thats a lot of room if you are only using it for 2. one way you convert digital to electrical signals the other to light. We always use fiber in high end computers to large disk arrays because it a better, faster medium than electrical signals.

Thanks, Mark. I already own the coax cable, so I'll try that first.

Steve, would you keep the Benchmark's volume in 'calibrated' or 'variable' mode?

Would replacing the stock fuses make a difference?

Audioengr - I also stream my music via PC iTunes to an Airport Express, toslinked into my Benchmark DAC-1.

1) May I ask what is the reason to use Pace-Car reclocker while Benchmark DAC1 already has UltraLock that claim to reduce jitter to almost nothing?
2) How is your Pace-Car compare to other reclocker devices such as Audio Alchemy DTI, Meridian 518 or Monarchy DIP 24/96?