I had a Luxman M800A for a year or so and it was very good on my Sasha 1's. I did think it was a little soft or polite, as amps go.
I now have a Coda 8 and after 33 or so amps in the last 15 years, this one is outstanding. Grips the music, has zero harshness, plays all frequencies without overdoing any. I also love the operation of the amp; just leave it on and you can instantly start and stop it with the Bias button. This keeps it warmed up and allows cable swapping in seconds. No snaps, pops, or abnormalities.
Love this amp. I don't want another Pass or similar brand amp now. I would consider Luxman for a second system if that ever emerged, but not any time soon for me.