Sound differences would also come down to which loads these amps are seeing. If the speakers has low impedance combined with high negative phases angles at those low impedance's, "generally" then I would go with D'Agostino amps over the Ayre's. Because that's what Dan is known for, making amps that drive nasty loads.D'Agostino vs. Ayre
To anyone who has heard the D'Agostino Momentum series amps and the latest Ayre MX-R Twenty, care to compare and contrast the sound?imgoodwithtools
If the speaker loads are easy then you'll have to listen to both on that speaker.
Cheers George