Double Ugly,
I am interested in your thoughts as you get to spend more time with the Spectron, please keep us advised.
I'll try to remember to do so, John, but it sounds like you're pretty well set.
I don't recall having heard the CA-300, but it has a stellar reputation. I'm sure the Musician III SE sounds different, but better?
If your new speakers are what I
think they are, you don't need the extra power (how much better can dynamics be?!? how much air do you want to move?!?), and I suspect the pairing with sound fabulous.