What is the best amplifier for Tannoy Kensington ?

I notice the Kensington frequency range is 29Hz - to 22 khz. Doesn't the 22 khz seem quite low? Any Kensington users find them lacking top end?

Jeff Rowland Model 2 or Model 6 with Battery Power Supply

At the moment I am driving my Kensington with Manley Neo-Classic 300B SE/PP with single-ended typology (11 watt). The sound is as full, dynamic an funky as with Snappers (100watt), but with better holography, midrange magic and transparency. It also handles complex music as symphonies and bass-heavy music as soul and rnb. Whatever the reason these 11 watts have no problem to play Kensington loud in my middle sizes living room.

Al - thanks for the explanation. You are of course right, as usual!

@ Almarg: So, is passive biamping with the same amp(s) ok?