Okay, How Important Is Speaker Break In? (Dynaudio Contour 60i)

I have had my Contour 60i speakers now for a couple of months.  I am not consistently available to play an audio session so at this point I have only about 70 hours of run in time on them.  I found them to be a bit bright, initially.  After about 35 hours they tamed down a considerable amount.  Since then I have noticed further taming in the upper midrange and lower high frequency range.  Soundstage and imaging are absolutely amazing and I do not want to lose any of that.  So, next step was to provide more room treatments.  I added a center treatment panel (positioned between the speakers and covering about 80% the width between them).  That made a very significant difference.  Vocals, string, and wind instruments are better than ever.  I also pulled them a couple inches further from the wall than where I had them.  That, I believe, played a role as well.  The front of the speaker is now at 36" from the wall.  Based on the changes in sound over the run-in hours of playing, I tend to believe they will continue to improve.  At this point I am very satisfied and they are truly a first class speaker in every way, from build quality to sonic quality.  I think that relative to other speakers out there these are priced at least $3K below market value.  So much depends on what your individual tastes are for music reproduction.  These speakers are "alive" but not "in your face, brash".  You may prefer a very laid back or even dark sounding speaker. The Contour 60i is not that type of sound.  The choice is yours, of course. The system you have should work well with the Contour 60i, so I don't believe that is any sort of issue.  Try moving them further out from the wall, if you can, even just a couple of inches.  Be sure to place some room treatment between them and most certainly at the first reflection point for either side (if you don't already) and I think you'll find a really good speaker on hand.  Again, their soundstage and imaging characteristics are amazing and you should take that into consideration as a big role in what a speaker does for your listening pleasure.  Hope this helps.

@mathiasmingus  I tried a respectable tube amp on the speakers and though it sounded very sweet, it just didn't deliver the "slam" that I want.  Of course, amps are all very different from one another so I can't speak for what an ARC amp would do or any number of other great tube amps.  The Contour 60i do demand some current to make them come alive and deliver what they are capable of.  I settled on a SS amp that has a softer sonic signature than most.  I bought a Balanced Audio Technology (BAT) VK-255SE.  I also use the very well paired BAT VK-33SE preamp (lovely tube preamp).  It's a wonderful matchup for the Contour 60i.
So the bottom line is, if you are finding the Contour 60i speakers are delivering what you had wanted then at some point make a change in your electronics that will better suit them.  You have the preamp, just get the right amp to address the sonic signature that you desire.  And yes, a very good power cable and signal cables are very important in delivering what any electronics have to offer.
Enjoy the fun ride!

@mathiasmingus  Glad to hear that you are now a Dynaudio convert.  I have long enjoyed the Dynaudio signature sound.  My new Contour 60i just keep sounding better and better (as you have found).  Just yesterday I went back to my new copy of Jennifer Warnes, 'Famous Blue Raincoat'.  That is an album that will really show how the human voice can sound with a good speaker.  When I first got my new Dynaudios I played that album to establish a reference sound for the speakers when new.  They sounded good, but somewhat strained and narrow on her voice.  Last night I revisited the album and WOW, what a difference.  The slow development of the speaker break-in process is typically difficult to notice, on a day to day basis.  But doing what I did with that album - playing it early on, waiting for a respectable amount of speaker break-in to be accomplished, and then playing the same album again - was a revelation of proof for the total process.  The sound quality last night was breathtaking, absolutely fabulous.  Jennifer sounded as if she were singing directly in front of me, live!  At the present stage you are with the speakers you can still do that.  Give it a try, using your best sounding album with human voice and also try for some wind/brass instruments. 
Enjoy the speakers.  They are wonderful.