How does a Transport effect sound?


hi guys,

Been wondering about this: How does a CD Transport effect sound?  Isn't it just reading the disc and sending the 1s and 0s to the DAC.  Shouldn't every transport sound the same?

Thanks! 
leemaze
Steve N. well said.
I have a PS Audio DirectStream DAC and transport, interconnected with an HDMI cable over their I2S interface.  From what I understand, they reduce jitter (timing errors) with the separation of the bits from the timing on that interface.
Long-story-short, when I replaced my prior transport with the DirectStream...WOW, nice upgrade!

I have a PS Audio DirectStream DAC and transport, interconnected with an HDMI cable over their I2S interface. From what I understand, they reduce jitter (timing errors) with the separation of the bits from the timing on that interface.

Actually, the separation of data, control and clocks in I2S bypasses the S/PDIF receiver and any upsampling that might be in the DAC, so the signal goes directly to the D/A without conditioning or synchronizing of clocks.  I2S is the native interface for the D/A chip.  This does not actually reduce jitter very much, except for this bypassing.  The jitter of the source is what you get to hear, so the lower that jitter is, the better the sound quality.  I like this approach because as new sources achieve lower jitter, the same DAC sounds better and better.  My own Overdrive SX DAC is like this.

If you think the PSAudio transport is good, you should hear my Ethernet Renderer, the Interchange, connected with HDMI I2S cable to your DAC.  This will deliver signal with ~15psec of jitter.  This can play files from any computer running Jriver or Minimserver.

I hope you are using a very good silver I2S cable.  This  makes all the difference.  FYI, I sell one of the best on the market.

Steve N.

Empirical Audio

I promised to measure jitter for two cables for jc4659, a Belden and a Canare BNC cable.  Here are the results:

http://www.audiocircle.com/index.php?topic=154425.msg1669506#msg1669506

Steve N.

Empirical Audio

erj1953,

I totally agree with you about the PS Audio Direct Stream player it is fantastic as a transport for the PS Direct Stream Dac.

On the other hand, when I bought (new) the Synchro Mesh it degraded the sound in my system. I sent it back for a refund. And I must say that I was given quite a hard time getting my money back.
Perhaps the owner has now seen the errors in his customer relations.

ozzy

ozzy - First, you purchased an older model Synchro-Mesh. Not all DACs respond well because some have internal resampling already. It is also critical to use a good output cable.

Second, I always refund within 2 weeks if returned within 30 days. Did you return within 30 days?

How long did it take to get the refund?

Steve N.

Empirical Audio