To most, nothing special, but for me, My PS Audio GCA amplifiers, are ALL I need.
GCA-500
GCA-250
Somehow, the "gain-cell" technology, delivers power
that,at least the 2 models I own, are Both, STABLE
to 1 ohm regardless the speaker.(I tried) Also; Both
Delivering The very Best "FIRST!" Watt, from an amplifier. IMHO.
If the first watt, is garbage, what follows, won't be ANY,
Better. Just Louder.
They are cool running, 24/7/365 never off.
Never ANY problems at ALL.
Don't draw huge electricity.
Paul should be very Proud.
I Love Music!