Streaming Quality Test - Lumin U1 vs. PS Audio Direcstream DAC vs Bridge II

Helomech,

On a well setup system the differences especially in dacs, should be quite large unlesss both dacs are of a similar quality, then the differences come into play in terms of soundstaging, resolution, musicality and tonality.

We sell and display many dacs, Naim, Nad, Mytek, Lumin, Light Harmonic, T+A, Cary Audio, Emm Labs, Anthem, M2 Tech and a few others.

As per a built in streaming card vs an external server, the internal card should have the advantage, it is not a matter of price, the internal card will allow for less transmitted jitter as you effectively have no cable and the signal path is very short.

We have run exactly thoese kinds of demos we have compared the Innouos servers vs the Baetis, the Baetis vs the Memory Player, and we have done other such tests, such as the Aurender vs a modified Mac Mini

On our systems as well as many of our client’s systems the differences are very audible.

There is a richness and improved dynamics when you upgrade your digital server, also some digital servers can allow for digital crossconversion and upsampling.

On certain dacs a regular 16 bit 44k redbook cd file when upconvereted to a higher sampling rate or converted to DSD may sound far superior to its native red book files.

With the Lumin the kicker is to set it to transcode PCM to DSD and then feed it to the dac.

The amazing thing is how audible the difference in servers actually is.

At the Munich show Innous was comparing their new two box statement server $13k to their original reference server the Zenith SE a $7,500.00 server and many people were blown away by ow much better the new more expensive server sounded on the same digital file.

If bit was bits then you could not hear a difference in digital cables we have sold the AQ Diamond, the Wireworld Platinum USB, the Enklein David and the Light Harmonic USB cables and boy these cables all sound different and they are all transmitting digital data from the same server to the same dac.

Ask anyone who ever heard a CEC belt drivien CD transport if there is an audible difference in CD transports?

Dave and Troy
Audio Doctor NJ

Dave and Troy,

sfseay was listening to two different streamers through the same Dac, not different Dacs.

Replying to hemotech comments about dacs sound the same they dont.

Dave and Troy
Audio Doctor NJ

I've been going back and forth between the bridge and the usb input fed by a microRendu and LPS-1 and while they are very close, I think I prefer the sound through the usb input.  The difference I'm hearing is a little bit more tonal density and liquid smoothness through the usb fed by the microRendu.  It is a very close call though.  Of course if you care about MQA you'll only get the full unfold by feeding the dac over ethernet into the Bridge II.  I have noticed NO functional difficulties with either the dac or the bridge II. I just prefer the sound of the usb fed by the microRendu.

You're not going to see much of a difference in a DAC like DirectStream or any of the latest Chord DACs. They are more or less immune to jitter and other streaming artifacts as they feed the data into memory first in the FPGA chip. For all intents and purpose my Chord DAC sounds identical whether fed by Auralic Aries or $35 Chromecast. I use Chromecast to be able to stream directly from the iOS Tidal app without using the Roon or Lighting wrap around the Tidal API. Anyone that says otherwise does not understand basics of what happens to the signal once it's fed to the FPGA's memory cores.