Must be time to try something new even though there's really no rational reason to, in fact it could be a waste of time. Presently I'm using an Innersound ESL 300 that is the only amp I've had that doesn't sound like transistors. Wonder if anyone has used the Belles 350A or the Classe 201 or 301 with their RM 40's. Please list your other equipment too please. Thank You