Originally Posted by Sid-Fi
Vinnie, any idea if any data is lost or noise/jitter introduced during the streaming/receiving process? I'm confused why the Onkyo and Wadia are considered bit-perfect while Logitech seems to only consider the the $2,000 Transporter bit-perfect when Duet or Classic have digital outs. Any help would be APPRECIATED. THANKS.
I'm not sure what is really meant by all this "bit perfect" talk? Define "bit perfect."
As long as it is not something like a DLO iPod dock (which actually takes the analog line out of the iPod from the iPods internal dac - and then converts to S/PDIF via A/D conversion to be sent to an external dac - thus defeating the point!).
But all these units mentioned above take the digital music files (e.g. files on your iPod in the case of the Wadia, or files on your computer in the case of the Squeezebox) and output them via S/PDIF - and you feed that to your external dac.
If the Wadia is "bit-perfect", I see no reason why the Squeezebox 3, Duet, or Transporter are not. Either the 0's and 1's are transmitted and received (via the coax or optical SPDIF), or not.
Wirelessly streaming of the Squeezebox units (SB3, Duet, Transporter) is via Wi-Fi (or Ethernet cable), and as long as there is enough bandwidth, there shouldn't be any drop-outs. When the digital data it received by the Squeezebox, it is then processed and converted to S/PDIF to feed the optical and coax digital outputs (and also fed into their internal dac, which feeds the L and R analog output stage of this unit).
Jitter is a whole other story. Severe jitter can lead to problems (errors at the receiving end of the digital data stream), but I don't think any of these units have jitter that is unusual or bad enough to cause such problems.
I don't want to thread-jack this Onkyo ND-S1 thread, so perhaps discussions about this sort of stuff should be started in a new thread? If it is, please link to it and I'll take a look...
All the best,