Need efficient floor-stander for 2a3

I would recommend the Cain & Cain Abby, possibly with a sub for rock music
- very lively, very engaging presentation.

I ran my Abbys with a Fi 2A3 amp for several years, which made for a great
combination. I also heard another 2A3 from Bottlehead which worked equally
well - the 2A3 seems to be just the right tube for the Abbys.

Coincident Eclipse, partial eclipse, victory or similar. They love low power tubes and are amazingly efficient, just ask my 3 watt amp.

I believe the 2 Pi model from Pi Speakers can be built as a floor stander. A great product line for low-power amps.

Tekton Lores.

I can also recommend the Tekton Lores, I'm very happy with mine. Zu Audio Omen also work well with my 2A3 amp, but I preferred the Lores. Can't really go wrong with either.
I've also read others recommend 3As, Omega, and Fritz.