The joules were incredible. I had them for many years but passed them on to a new home after I bought a VZN-80 and found it just as satisfying in my system as the rites but in a smaller (and cooler) package. My main speakers are quintessence prototype and they are extremely efficient. I’m currently powering them with a first watt SIT-3, which I find to be a smooth, detailed, quiet and addictive small amp, much like the RM-10. The little class A pass amp sounds exceptional driving the quintessence.
Enjoy your RM-10. They are very special. I will never sell mine.