Touch vs. Transporter digital output (again)

[bhaagensen]

I've recorded the SPDIF on both and neither will miss a bit. Only difference may be jitter.

Ah, interesting. You're then among the few ones who have actually looked into this in some detail. Is the testing setup/result/disclaimers/etc detalied somewhere on the internet-accessible?

[bhaagensen]

Yes construction is different. most of Transporter's construction is for beefing up it's analog section.

But the digital section has certainly not been neglected, at least c.f. official data concerning jitter.

[mswlogo]

Ah, interesting. You're then among the few ones who have actually looked into this in some detail. Is the testing setup/result/disclaimers/etc detalied somewhere on the internet-accessible?

Here you go

http://forums.slimdevices.com/showth...424#post551424

[Phil Leigh]

If you are recording and diffing s/pdif you will never see jitter. Jitter will only manifest post-DAC (assuming decent, working equipment - which you do have!). For jitter to manifest pre-DAC it would have to be so severe as to change the bitstream - which we all know it doesn't in the SB2/3/TP/Touch devices.


All the evidence available points to the conclusion that the Touch and TP are pretty much perfect deliverers of s/pdif to a DAC...

[mswlogo]

If you are recording and diffing s/pdif you will never see jitter. Jitter will only manifest post-DAC (assuming decent, working equipment - which you do have!). For jitter to manifest pre-DAC it would have to be so severe as to change the bitstream - which we all know it doesn't in the SB2/3/TP/Touch devices.


All the evidence available points to the conclusion that the Touch and TP are pretty much perfect deliverers of s/pdif to a DAC...

I know that, but some don't seem to believe it. SB3 is a perfect SPDIF deliverer too (both toslink and SPDIF). CO2 converts perfectly and TASCAM records perfectly. All that is left is jitter. And if your DAC buffers/reclocks that gets rid of all peak to peak jitter.

So people must have really bad DACs if they can hear differences between toslink vs coax and this cable or that.

[Phil Leigh]

I know that, but some don't seem to believe it. SB3 is a perfect SPDIF deliverer too (both toslink and SPDIF). CO2 converts perfectly and TASCAM records perfectly. All that is left is jitter. And if your DAC buffers/reclocks that gets rid of all peak to peak jitter.

So people must have really bad DACs if they can hear differences between toslink vs coax and this cable or that.

I know you know that I know you know ... :-)

I wish I could find that thread where Sean attacked a Toslink cable with various tools to try and make it "jitter"...

[Themis]

So people must have really bad DACs if they can hear differences between toslink vs coax and this cable or that.

You are talking about the SPDIF receivers, not the dacs, surely ?

Please allow me to respectfully disagree to your above assumption. As you are not talking about jitter anymore, what are you talking about, exactly ?

[mswlogo]

You are talking about the SPDIF receivers, not the dacs, surely ?

Please allow me to respectfully disagree to your above assumption. As you are not talking about jitter anymore, what are you talking about, exactly ?

I'm talking about how robust SPDIF communication is. If you have a Good DAC (that buffers/reclocks - many do) it doesn't matter what you use for an SPDIF cable (TosLink or Coax).

[mswlogo]

You are talking about the SPDIF receivers, not the dacs, surely ?

Please allow me to respectfully disagree to your above assumption. As you are not talking about jitter anymore, what are you talking about, exactly ?

Better yet. Why don't you read the actualy thread I explained myself in rather than read it here out of context.

http://forums.slimdevices.com/showthread.php?t=79245

I replied to this thread with a LINK to that because someone asked if I had posted information about some testing further up in this thread.

[Mr_Sukebe]

They are both absolutely 100% bit perfect (TosLink and Coax, Wifi and Wired). I've recorded the SPDIF on both and neither will miss a bit. Only difference may be jitter. But as dicussed elsewhere a good DAC will take care of that.

Interesting, I've never found a DAC that can completely eliminate jitter and I've tried a few, including a Bel Canto DAC2 (that supposedly reclocked) and my existing Meridian 568.2 that uses some clever FIFO. On both DACs, different quality digital sources sounded different, implying that neither was fully successful in eliminating jitter.