Streamed music sounds awful in my system and I don't know why ....

You need a real high end streamer. Your other equipment is excellent. I used to run a Moon 650 DAC / CD player. I streamed from PCs and MACs for years to get nowhere near CD quality until I bought a high quality streamer.

My first was a Auralic Aries G2. But I recommend an Aurender. I would recommend an Aurender streamer of comparable or greater value to your DAC. So my first choice would be a Aurender W20SE or if you want to conserve money an N20 (a compromise). But the Moon 780 is very revealing… which is why your streaming does not sound great. You have a $500 player attached to a $17K DAC. Your DAC deserves a W20SE.

Go buy a Simaudio Mind2 and be done.

For the moment, basically everyone agrees...that never happens around here. 

Yes, get a good streamer...stream Qobuz or both Qobuz & Tidal. Don't bother with Spotify, Apple. If user experience is important to you seriously consider Roon before choosing a streamer. Watch this for a good explanation. 

Hans Beekhuyzen Roon Review

Cheers,

Spencer

thanks, all.   MIND2 is built in to the Moon 780 DAC.

Yep.  PC is a no go. 

Think aobut roon.  I love it.  You'll need a dedicated computer for the core (use ROCK) but you can try it temp installed on any computer.   Then use your phone to control.

If you go roon you can use a simple streamer such as IFI zen or Allo USBridge signature.

Jerry