Steven Sullivan wrote in message ...

Better yet, a variable crossover. Variable phase adjustment
is nice to have too.

Yes.that's really important. At 180 ( my sys), the sound clearer and
the bass is tight with good punch. Unfortunately, not many can tell
the diff. In fact, speaking of the phase, i remember that for the DAC,
I could only tell on certain music which phase is better but in
majority of them I am unable to tell correctly. Wonder how important
is phase is?