Help please! Something amiss with my digital chain


Hello all,

I'm new here and new to the audophile community.  At 49 years old, finally have had a moment to set up some nice audio so I can sit and enjoy music - with the family and by myself! - as its meant to be heard.  No more soundbars and bluetooth pod speakers.  Was a vocal performance major for 1 1/2 years in college and music has a hugely positive impact on my life. 

After much initial research and some listening to a few friend's systems, I spent a little money.  The analog chain sounds fantastic - rich, nuanced, lively, none of that fatiguing glare - I can't believe I waited this long.  Pound for pound super thrilled with the result.  When I switch to my digital source, however, the music sounds much thinner, flat, lifeless - awful.  Can someone more experienced than I help me diagnose the problem? 

The system:  MoFi Ultradeck with MoFi Ultragold MC cartridge --> Modwright PH9XT phono stage --> recently refurbished Decware ZMA tube amplifier --> Omega SuperAlnico monitors.  The digital side includes an Auralic G1.1 streamer --> Linear Tube Audio Aero DAC --> Decware ZMA.  I use Audioquest red river level interconnects and mid-level Decware copper speaker cables. 

Some hypotheses: 

1. Could it be I need a pre-amplifier after the DAC?  Holding the amp volume steady, sound level coming from the DAC is noticeably less than from the phono stage.  If this is the issue, any suggestions on what will have good synergy with the tube amp? 

2.  Power supply issue? right now I'm plugging everything into a very basic surge protector.  Was gonna wait and see before pouring cash into this aspect of things. 

3. Weird setting issue with the complicated streamer?  I'm playing Tidal and it seems it automatically shifts to whatever resolution the track is, but maybe I'm doing something boneheaded here without realizing it. 

4. Burn in issue? The DAC got a week of burn-in before I received it. I've also run music for several days when away from home to see if things improve but its not changing much. 

Any and all ideas appreciated.  Thank you!  Alejandro

ale1601

Yes, missing a preamplifier is likely the issue. Digital equipment today can often be run without one, but they loose their naturalness... musicality. A high quality, I recommend a tube preamp should bring its heart and soul back. I would look for a used Audio Research, Conrad Johnson, Vac, or Presto preamp. Invest as much as you would on a good DAC or amp.

 

Streaming should sound just as good as vinyl in today’s world. 

 

Power conditioning will make your system sound better... but not more musical and natural. It will lower the noise floor and reveal more detail. I recommend Shunyata or Isotech power conditioner for all components except amplifier.. that should go straight into the wall. 

Forgot one other thing -- Auralic is streaming from wifi right now.  Need to run out and get a long ethernet cable but also thought about seeing if wired connection made a big difference.   Thanks!

Appreciate the thoughts @ghdprentice !  I have heard streaming should be very close / as good as vinyl so looking forward to getting things there. 

Based on personal experience put some Ray’s tubes in the Aero.

Get rid of the surge protector. Before spending money on power conditioning have an electrician come in and run a couple dedicated lines for power supply. (I assume you own your home) Might not need power conditioning. 
Go to Blue Jean and buy a Cat6a cable. You want a good cable.
Is your router/modem up to the task? Is the router configurable? Is streaming the priority? I recently bought a separate modem (Motorola) and separated router (ASUS) and believe improvement was made.
Borrow a CD transport and see if the sound changes. That will narrow the diagnostic process. 

1-quality preamp will make everything sound better

2-use eithernet not wifi.  Install a good switch or eithernet filter just before the streamer.  This will smooth out the sound a great deal and sound more analogue.