Ayre AX5 Twenty

For comparison sakes here are the measurements for the earlier model:

Ayre Acoustics AX-5 integrated amplifier Measurements | Stereophile.com

Notice that it's only able to produce 220 Watts into only 1 channel rather than the 500 Watts into 2 channels that a 125 Watt stereo amp that could ideally double down and double down.  And it's becoming unstable doing so into that 1 channel driven 2 Ohm load. 

A rather expensive integrated considering it’s power output,    that has been rather well received by reviewers. It should be noted that original AX5 measurements suggest that it is not an ideal candidate for low impedance speakers.