Yesterday we had the listening session for the Harbeth 30.1 vs the JBL L200/300. We spent over 2 hours spinning CDs, SACDs, and even vinyl!
The JBLs certainly had the advantage of dynamics and volume being over 8 dB more efficient and running at about 1/10th of the power.
But, I have the ability to compensate for that and when played at the same volume level, the Harbeths sounded clearer, more "open," and less colored with better vocal rendition. Joni Mitchell did not have that "dark cloud" on her voice. Guitar, both acoustic and electric, was very convincing. Perhaps the sax was more realistic on the JBLs, but the Harbeths did a great job here too, probably better than the L112s (but not used in the comparison).
The real suprise was that when played at the same level, the Harbeths had a tigher bass that was very full and convincing. Certainly a subwoofer helps, but the Harbeths did an outstanding job for their size and heft.
Huy also got to listen to a whole different genera of music, loved it, and it would not suprise me at all if in the near future the sound of Joni Mitchell and Loggins & Messina permeate through the Little Saigon area of Orange County, CA.