I was driving my large Harbeth M-40.1's with a VAC Renaissance 30/30 MKIII, which I've just listed today. It would easily power you compact 7's and would sound phenomenal. I'm only selling it because I've moved up to the 30/30's bigger brother, the 70/70 Signature.
Also, go with tubes if you want to get the best sound out of your Harbeth's. I also had very good success with the McIntosh MC 275 MKV with upgraded tubes.
Also, go with tubes if you want to get the best sound out of your Harbeth's. I also had very good success with the McIntosh MC 275 MKV with upgraded tubes.