I recently bought a pair of the philharmonitors, had them for a few months and had to sell off some inventory and let them go. A few impressions I had was that right out of the box, they were not impressive,very laid back and no bass. It took quite a few hours for them to open up, and yes, power helps. I was enjoying the heck out of them and was planning on keeping them, but a seller came along and off they went. I had a pair of Focal 1008 BE, Tekton Impact Monitors and Odyssey Kismet reference monitors. I decided the Odysseys' were staying and out of the others, the Phils would win. Maybe someday I will get another pair.