What difference do AMPS make to the sound of an amplifier?

[Madeintooting]

What's the likely difference in sound between, for example, Something like a Fosi/Aiyama 3255 with a 10 amp 48v power supply and a Musical Fidelity M2Si, which although only rated at 72w into 8 ohms can swing current peaks of +/- 25amps?

 

[staticV3]

In a controlled listening test - none whatsoever.

 

[Speedskater]

In general: with accurate amplifiers and reasonable loudspeaker loads and reasonable volume levels no differences.
With euphonic amplifiers or demanding loudspeaker impedance curves or volume levels above their limit = Differences.