'Vintage Lo' on the Royal Atlantic with the soak off and the master up past noon is like a real player's 2203, if you've got some chops it's gonna make you sound even better, if not... turn the soak on and it feels a bit more like a 2204 with really hot preamp tubes, the Marshall sound but a little thicker with less 'kerrang'.
Tone stack is also much more useful than on any 800.
I'm a big 800 fan, I've had a half dozen between keepers and flippers and the RA100 is a really good Marshall+ option, especially when they're pretty cheap used given what you get feature-wise.