Recommend trying the pair in bridge mode. On my Verity Amadis, not even breaking a sweat in terms of power requirements, lots of reserve and great dynamics. I would think it would be the same on your harbeth. I notice a slightly more foreward presentation than compared to the VPA and excellent imaging. I bought one used from Gideon at Audioarts and the second one came from NL. I found that they are getting harder to find. Gideon has another pair now if you're looking.
