got to do a tune on one of these today using gladden midbasses and illusion c3cx plus 2 c10s and I gotta say..
this thing is seriously nice kit, no noise floor, nothing! gains set almost at the bottom with a high voltage source, andjust no color or noise of its own.
the car had the c3cx off axis so tuning was a bit harry but the raw first turn on sound was actually very promising. not once did I feel I needed more than the 85 rms to the mid/tweet ran passively, and that's not always true with a passive crossover.
I know this amp is pretty pricy, but it replaces two amps, has a great look to it, and I'd wager will last a long time.