For the record, I do think the P7 does "scale well." Much more so than I find the Momentum or HP50.
I find the treble response, while a bit too high for me, is spectacularly good; the resolution on the P7 is stellar.
I would say near world class.
Mid-range dip and mid-bass bloat disqualify it from that category for me, though.
I think the good amps really bring out the great HF resolution of these cans.
Sonido, I suggest you relax, let people...