Harbeth Users Group: http://www.smartgroups.com/groups/harbethspeakers You may find this group to be a bit "un-audiophile" in some respects (cables don't matter, etc.), but it's less hostile than it was just a few weeks ago when a certain well-known reviewer was a daily fixture.
I expect that Dodgealum is correct that the Harbeths are less sensitive to ancillary components than many other speakers. (I don't know if this is an indictment of the speaker or not.) But they still respond, and some people do like them with tubes. As with everything, you will want to experiment. I've only used my Rowland amps with them (so my comment above about sensitivity to other components is based more on intuition than experience), but would love to try something else to see how they respond. Keep us posted.
Dan
I expect that Dodgealum is correct that the Harbeths are less sensitive to ancillary components than many other speakers. (I don't know if this is an indictment of the speaker or not.) But they still respond, and some people do like them with tubes. As with everything, you will want to experiment. I've only used my Rowland amps with them (so my comment above about sensitivity to other components is based more on intuition than experience), but would love to try something else to see how they respond. Keep us posted.
Dan