A good amount of Steve's revisions are already incorporated into the 125, 225 models. He is going to be announcing mods for the "25" series amps soon - so you won't be stuck without them for long. My guess is the 225 sounds better than a stock 2. But certainly a Rev A 2 would beat a stock 225. Now a Rev A 225 vs. a Rev A 2 would be worth auditioning.
Enjoy,
Bob
Enjoy,
Bob