"...and I currently have a W4S 500 watt ICE amp that's left over from powering Maggie 20.1s'. The Montanas dont require that much power "
Firstly I wonder what happenned to Maggie 20.1? The ICE based amplifiers do not perform well when speaker impedance is reactive - as all ribbon Maggies are.
Secondly, you left W4S amp so you like it. While its more powerful then both Ayre or Modwright - power cannot hurt your speakers and if you like it then stick with it.
Cheers
Firstly I wonder what happenned to Maggie 20.1? The ICE based amplifiers do not perform well when speaker impedance is reactive - as all ribbon Maggies are.
Secondly, you left W4S amp so you like it. While its more powerful then both Ayre or Modwright - power cannot hurt your speakers and if you like it then stick with it.
Cheers