I've had an Ayre V-5x for about 1 1/2 years & have to mention up front that I have it for sale, so this isn't a sales offer. Anyway, it's the best stereo amp I've had, period. Plenty of power & current for my VR4 GenIII's to play louder than you want yet smooth enough to play at the lowest possible setting.
I'd also suggest Pass, as you can't go wrong with their products.
I'd also suggest Pass, as you can't go wrong with their products.