Looking for some recommended Balanced dacs, or Dac/amps. Currently own the aune X1s/X7s, and headphone wise, the sennheiser HD660s, HD800S, Beyer T1 2nd gen, DT990 pro, Hifiman HE560, and planing to get some HiFi Man Aryas and some stax at a later date. Im currently looking at the aune s6/s7...

Currently using the Aune stack with Sennheisers HD660S and HD800S. (also Beyer DT990 pro). But I get the feeling, to do the HD800S justice, I should get something better. Looking for a dac and amp, maybe something with tubes. Must have XLR for the headphones, USB input, Coaxial and optical...