If you have the resources to risk buying something like this sound unheard, then you have the resources to travel to audition it. Alternatively, if you are buying from a dealer who is that sure you will be blown away and consider the increase well worth it, then he should be willing to let you audition at home and return for refund less some relatively nominal forfeiture of deposit as long as you pick up the shipping/insurance if you decide against keeping. Then again, for a sale like this, maybe the dealer should offer to come and install for you at no charge, with you picking up that tab only if you decide to send the amp back with him.
As far as the amps themselves go, I haven't heard any Tenors, but have heard the 450's (and own the 185's), and while they're very good, I do think there is room left for improvement. What you should switch to in order to attain that improvement, and at what price, is your question to answer, preferably with your own ears.
As far as the amps themselves go, I haven't heard any Tenors, but have heard the 450's (and own the 185's), and while they're very good, I do think there is room left for improvement. What you should switch to in order to attain that improvement, and at what price, is your question to answer, preferably with your own ears.