Apple TV Streaming Sound Quality vs Streamer?


I am looking for the weak link to improve sound quality.   Seems logical it is the Apple TV as a source.  Would a moderate streamer inside of $1500 make much of a difference when streaming Tidal and the like?  

Current Equipment:
Speaker: Dali Euphonia MS-4
AMP: Modwright KWA 150 SE
Preamp/ DAC: Peachtree Grand Integrated
Source: Tidal / Apple TV
puffbojie
Benchmark DACs are known to be razor sharp. You're better off replacing it with something else, such as a NAD M51, or something from Chord.
Why do you say FLAC will never sound as good as WAV? My understanding is FLAC is 100% lossless. If a device were to decompress the FLAC input and place into a memory buffer which then feeds a DAC, shouldn't FLAC sound as good?

FLAC and wav contain the same data, however every DAC I have tried with every playback app that I have tried shows that on-the-fly decoding of FLAC impacts SQ.  The image and soundstage are affected.  You need a good system to hear this, but it's there.

And regarding ethernet, it would seem the fix to all of this crap with sync/async would be to standardize on a protocol for audio that is similar to TCP/IP in that it features error correction built-in which feeds into a memory buffer (memory is cheap nowadays) which would then feed the DAC section. I have no idea why the audio community hasn't figured this out already.

Packetized data with Ethernet works well, however the signal integrity and rise-time still impacts SQ with Ethernet.  Therefore, it is still important to have a fast driver in a Router or Switch and low-loss, high-bandwidth Ethernet cables.  Adding an isolator also helps with the capacitive leakage across Ethernet transformers.

The bottom line is that there is no panacea.  Every interface and protocol seems to have deficiencies.  The deficiencies with Ethernet seem to be the easiest to overcome, but at a cost of course.

Steve N.

Empirical Audio

Since adding the Benchmark Dac, I really enjoy the added detail but it seems to be a little brash in my system or at least to what I’m used to.  Would the synchro mesh mellow it out a little?  Or am I better off getting a more laid back dac? If so what are some good ones in the 1-2k used market?

If it's a Benchmark DAC3, then there is not much you can do.  It is fairly jitter intolerant.  It is what it is.

I would recommend to try either the Metrum DACs or the Border Patrol DAC with the Synchro-Mesh. These DAC's enable the benefits of the SM.

Steve N.

Empirical Audio

Steve, what means "HDMI is not hi-res"? HDMI 1.3 by its spec is a Dolby TrueHD / DTS-HD Master Audio bitstream compatible if devices support it. And even if we suggest that HDMI doesn't pass a bitstream hi-res signal, but using it instead of ATV's AirPlay with 16/44.1(-->48) is a huuuge difference, even for my non-perfect ears. And the signal is already PCM/88.2 on AV.

HDMI protocol was created for movies, not playback of digital audio formats. DTS is great for movies, but even DTS is nothing compared to 24/192 or 512DSD as an audio format.  The other problem with HDMI is that lack of good DAC's and reclockers to reduce jitter.  The best you can do to reduce jitter is the iFi SPDIF iPurifier which passes Dolby Digital/DTS.  I use these in my Home Theater, but not good enough for my audio system.

If your HDMI sounds better than your audio system, you need to upgrade your audio system IMO.

Steve N.

Empirical Audio 

Steve, thx for your response. Just making it clear. If HDMI supports bitstream, that means it transfers a digital signal bit-by-bit, so there can be no jitter lugs whatsoever. E.g. when you transfer a digital video via HDMI you can’t see a radio-style noise on like on old TV screens, because the data comes as is. The only possible visual artefacts you may encounter is a "snow" on some bad cheap cables or don't see anything at all because the data is corrupted. But if it’s a properly made HDMI cable then it doesn’t affect a digital data is transfers. So I just want to make everything clear step-by-step, for example: why 18Gbps (2.0) is not enough to transfer a bitstream hi-res audio via HDMI when here can be no jitter/need for reclockers/etc.?