I come from loudspeakers and it was tradition for me to buy the amp fist, so O2+ODAC is was.
Now my choice is HD650 or HE400. I like all music but will find myself listening mostly from classic jazz and blues to slow to medium rock from the 70s.
If you had an O2+ODAC right now which would you get? They are both $399 new will full warranty.
The help is greatly appreciated