Moving this here. So are you using the NAD currently in that room/setup? If so, a single Vidar should easily increase the output and headroom without an issue, and I’m going to bet will sound better overall. Although I know the NAD stuff punches above its weight, it’s pretty limited on power - a single Vidar will probably put out 2-3x the power of the NAD or more depending on the frequency since it doubles its power output into 4 ohms. And based on measurements Jason has posted in the past, it will push significantly more power than its specifications. And the nice thing is with Freya you could always upgrade to monoblocks down the road if you felt you needed even moar power.