I'm in the market for a new headphone stack that will at some point also include a turntable, and I believe the A90 is the only product that meets my requirements. I need at least two inputs (check, for the A90), enough power to drive anything under the sun (check) and, ideally, the ability to function as a preamp for future use with speakers (also check). As for creature comforts, I'd also like the unit's on/off switch to be on the front, which made me discard the Gustard H16.
Question, am I missing anything, or is the A90 really the only product that fits the bill? I don't necessarily need XLR + RCA inputs, by the way. Two RCA would suffice.
One other thing, is there any specific thing I should look for when purchasing a second hand A90? Any known issues I should test for? Thanks!