The only knock on the little 535 is it’s only 50 watts, but at a distance of 2 meters with either the NS10’s or Auratones that should be able to produce 101 dB, in theory. Right now the only Adcom in my house is a 545 with a broken binding post I should either sell or send to Jim. Since buying the BEL 2002 I haven’t plugged in another amp other than the little Quested 25 watt per side or one of the Stewart world 2.1’s in the live rack. I keep the little Quested to demonstrate for most applications you don’t need the power of the BEL or the Rack of Stewart’s, unless you like the idea of going deaf.
I don't have clients at home, and I don't listen loud, so I think I'll be ok with the lower wattage.
you will be fine power is fun but in most cases way over blown for near fields, plus in theory since both have the sam efficiency there will be very little change in volume when and if you go back and forth, usually that's the biggest complaint when switching speakers off of a single amp. In theory at least YRMV.
“Right now I need a Telecaster through a Vibrolux turned up to 10” Memphis in the meantime by John Hiatt