I just picked up a "refurbed" QSonix 100 server with current software, 750Gig capacity and new touch screen at <$4K. Add the tubed DAC of choice and this unit meets your criteria. I use a ss Benchmark DAC and have found that the sound is a bit leaner, tighter, and a touch less dynamic than the Cary 303/300 it replaced. OTOH, the sound is also "gentler" from the presence range through the highs and front to back imaging is decidely more dramatic.
As you change the DAC, I'd guess you'd change the sound I describe above - so YMMV with a tube DAC. One thing won't change - the QSonix GUI is absolutely addictive. If you're in the camp that favors hard drives over optical, this unit deserves a look.
BTW - I believe that refurbed units are still available on A'gon.
Good Luck,
Marty
As you change the DAC, I'd guess you'd change the sound I describe above - so YMMV with a tube DAC. One thing won't change - the QSonix GUI is absolutely addictive. If you're in the camp that favors hard drives over optical, this unit deserves a look.
BTW - I believe that refurbed units are still available on A'gon.
Good Luck,
Marty