peterjgross
New Head-Fier
I'm playing back 24/192 tracks using Audirvana Plus over UPnP on a wired network to the Pro iDSD with zero issues. I've even played DSD256, which uses vastly greater bandwidth.
If it "appears to be worse for FLAC than it is for WAV" then it's your computer. DACs do not decode the file, but the computer decodes them to PCM (essentially WAV) before sending them to DAC. Likewise the ALAC issue -- the software on your computer must be mis-reading the sample rate.
I recommend trying Audirvana Plus and seeing if that solves the issue. I believe it's available for Windows as well now.
Thanks for responding. A few points though:
- As pointed out in previous posts i see the exact same stuttering behavior for all inputs that fall under "App" - so also when playing the same FLAC file from an SD card inserted to the slot in the Pro iDSD. So i consider it highly unlikely that my computer is causing an issue
- i have tested streaming from different servers running Asset UPnP - a Windows 10 computer and a QNAP NAS (which runs a Linux derivative).
- i stream from the same source same file to a different DAC (my Marantz SR6012) and there is no stuttering
So overall the evidence clearly points to an issue with the Pro iDSD.
A few questions regarding your post:
- you say you played DSD256. That tells me you played via USB interface (App interface only supports DSD64). My posts refer to App interface, not USB interface
- when you say "the computer decodes them [media files] to PCM" - that may be true for what Audirvana does when sending files via USB. But i do not believe this is how streaming from a UPnP server works. Most UPnP servers can transcode but this is optional.