harbeths like an amp to grab them by the you-know-what’s and make them sing
more efficient devores may not want/need this quality in an amp sound their best
as usual, system synergies prevail in a specific application
Yes, that’s my experience after living with the Harbeth for more than 10 years. There are still some people who prefer the Luxman/Harbeth combination but it’s just not for me. No doubt it plays nice music but it’s too nice to the point of boring. The sound is soft at the edges with reduced dynamics when compared to amps which are capable of bringing out the punch and attack in music.
I couldn’t agree more that system synergy is everything. I've done the comparisons. The Luxman sounds great with Marten but not so good with Harbeth. On the other hand the Naim sounds great with Harbeth but not so good on Marten. The speaker needs to be properly matched to the amp (or vice versa) for optimal results.