Tube amp mono block recomendations

Conrad Johnson Premiere 8's can be had in great condition and prices. :) 

Big bold sound, amazing imaging. 

I would recommend sticking with Audio Note great synergy and they make great tube amps.

For the record, I've never heard any Audio Note electronics. :)

I've heard some nice demos with Audio Note, but for your music preferences and the Tannoy speakers I'd suggest at least auditioning Manley amps.  They offer some of the best bass among tube amps and are a known match with Tannoys.  The Snappers meet your price point when used.  No reason they wouldn't work well with your other speakers too.

Our M-60s work very nicely with the Audio Notes. IME it is helpful to give them a bit of power- while they are easy to drive and a benign impedance for tube amps, I would characterize their efficiency as 'moderate'; about 90 or so dB. So in most rooms 60 watts is a good minimum amount of power.

For this reason unless you are nearfield in a smaller environment I would not recommend a 7 watt amp on this speaker- it simply won't be enough power.

The Tannoys are very nice but here again its helpful to give them a bit of power. Of course this is true of the Snells as well. IMO/IME if you are planning a tube amp, 60 watts should be your minimum target power, but a lot depends your room and listening habits.