I'm a Harbeth dealer so take my opinion for what its worth. Yes they can boogie but you need some serious power to do so. Took a long time to figure this out. They also need very very careful room placement. Strangely they are picky unlike any other Harbeth speakerss. Even small movements will change the sound and bass characteristics. When set up right, nothing sounds better. They are simply steallar and will do 20hz in a room. No comparison to lesser Harbeths. They have an effortlesness, transparency and resolution the others do not have. Side by side it's painfully obvious as fantastic as the HL5 is.
Can the Harbeth 40.1's boggie ?????
I am not looking for ear shattering volume - but everything I have read ( and no, where I live I cannot listen to them )but I am considering them. But, can they play some rock and roll and get out of their own way ???? Reviewers and owners have noted that they sound great at low volume levels - and they have an '' organic natural sound '' - that's great but can they play Lynard Skynard, some Allman Brothers and god forbid some Grateful Dead that well - like they advertise -sounds like real music ??? I also listen to Eva Cassidy, The Eagles, Jackson Browne, Pat Methany, JJ Cale and most of all The Beatles ....and why do see so many of them for sale ??? Ummmmm.....