Hey John, I hope that you're not too disappointed, but I broke my new m60's in with a four pack of Guinness Stout (I couldn't find the one eye brow brew!), and the rude essence of folks like John Coltrane, T-Monk, Branford Marsalis, Joe Satriani, and Miles Davis....just to name a few! The Guinness was great as always, and most of the music was well worth 'at least' the $900 for the new drivers. I noticed on cd's like Satriani's Engine of Creation, a hollow sound (not sure exactly how to describe it, rather unpleasant though!) and this was prominent on some other rock sources I played. The jazz all sounded fantastic as well as the classic licks like the violin concertos by Beethoven and the elaborate Gershwin comps. In all I'm happy with the purchase and don't think that the 30 day trial is a temptation at this point.

Thasp....I have to say that the Onk tx8511 does a great job of pushing these units. I don't run volume past 50% ever....and regardless of the music source (so far), they never have sounded strained...always crystal clear. I do have one beef with the Onk vs the HK though....I ordered 12 gauge speaker wire along with the M60's only to find that my Onk amp won't accept the wire! So I had to thin and then tin so to speak. I've been told this would not have been an issue with the HK...oh well. A small inconvenience, but still a disappointment. So, still in break-in mode I listen on....
Any one out there heard the Coltrane Ascension cd? Definitely a tough one on the ears....but a great break in for a set of m60's!!!!
Thoughts....cya folks and thanks for the guidance....