Your 8 year old Altis Ref and my 10 year old Audio Logic M-34 are BOTH extremely musically involving tube Dacs, period.
Don't believe everything you hear about up and over sampling being better because .............
Build quality is nice to have, but it is design engineering (power supply esp.) and execution with system synergy that reign supreme.
I know a lot of audio heads that would snap that Altis Ref. off the A-goN classifieds in a heart beat (if you ever decided to sell it)
Keep your Dac, it's very special.
Don't believe everything you hear about up and over sampling being better because .............
Build quality is nice to have, but it is design engineering (power supply esp.) and execution with system synergy that reign supreme.
I know a lot of audio heads that would snap that Altis Ref. off the A-goN classifieds in a heart beat (if you ever decided to sell it)
Keep your Dac, it's very special.