Hello Dave, nice little system you have, but do the Tannoys sound better on their sides? Maybe I should try that!
Just kidding, I'm also a Tannoy guy, and using a 9Wpc SET 300B to drive my 12" HPD's.
I remember back in the day (ca 1972), driving my first pair of DIY 12" MG's with a Kenwood 45Wpc integrated amp, and they sounded amazing. Can't go wrong with Tannoy.
Regards,
Dan