Best amplifier for Tannoy GRF Memory HE

The big Tannoys are lovely! As per amplification and given the plethora of choices out there, I would recommend any class A topology that suits your sonic tastes -- simply because that topology requires high VA power supply reserves. These are useful in taming the "thickness" chang refers to above.
You will also use twisted single-core copper wire (16 or 18gauge) for spkr cabling, of course, as a reference.
BTW, S23chang WHICH Jensens are you using on the GRF?

I'm not sure about the need for a preamp unless you use a TT.

Thanks Chang. The 225 *might* take you a tad lower and sweeter; but not sure about using the same enclosure though...

The EVs: if memory serves SOMEONE is using/has used these on an open baffle and a 200-150Hz tractrix horn. I can't find the link (I may be confusing things too). IF I'm not confusing things, the tractrix loading was superb.
That's quite a few ifs:) Cheers