Wilson WP 7 with Air Tight ATM 211

The Air Tight ATM-2 stereo amplifier at 80 watts would be fine on the Wilson Watt Puppy 7.
I use the Air Tight ATM-2 amplifier to drive my Harbeth range of loudspeakers with ease, many people also use this amplifier with Sonus Faber speakers.
The SET amplifiers are better suited to more efficient speakers 93 db speakers upwards to get the best sonic results.

Raquel, I did not think the dartZeel amplifier used valves!!

The best sounding solid state amplifiers in my opinion are Class A biased like the Pass Labs.

Hi Lenny & Welcher
Yes a good valve preamplifier matched with a excellent solid state power amplifier is a very nice blend of both amplifier designs, excellent sonic results can be achieved this way.

Welcher, the Wilson Watt puppy 7 will run with SET amplifiers of higher out put like 845, 211, 833A etc fine.
Usually it is easier and more affordable to use a more powerful Push Pull valve amplifier to get excellent results with the Wison speakers, and as a general statement more dynamic results.
If cost is no object then there is always exceptions of course, like the Lamm ML3, WAVAC HE 833A etc.