I have a Musical Fidelity M6si which I'm very happy with. So I'm curious why you wouldn't consider staying with the brand (MF) you are already familiar with.
As to the current/amperage specs, you may want to check out this thread https://forum.audiogon.com/discussions/how-to-measure-current-in-an-amplifier as I posted a similar question some time ago and some rather knowledgeable folks were kind enough to chime in with answers.
As to the current/amperage specs, you may want to check out this thread https://forum.audiogon.com/discussions/how-to-measure-current-in-an-amplifier as I posted a similar question some time ago and some rather knowledgeable folks were kind enough to chime in with answers.