Got my RH750 today... with 2 RS210s and 1 RS212.
This amp is a monster! I love it! Still tweaking presets and EQ settings... I have a feeling I'll be at that for a while... but right out of the box I love the tone with my Sadowsky Will Lee. It's damned near perfect. I can't wait to gig with it in a couple of weeks.
When I tested the upper reaches of its power, my daughter complained about me shaking the house.
BUT, of course, as I expected from reading all the threads around here, the knobs are shite. 5 out of 8 of them are so loose they slide off the pot shafts with little to no resistance at all. Contacting support for a new set. Pretty ridiculous. Wondering if I should just put a little Krazy Glue on the shafts when I install the new ones, or if that wouldn't make a difference.