So even if you can play music directly from iPhones and laptops into these HPs, this is not a proper way to listen to them, flat, bass almost inexistant.
Otherwise, the Rotel pre amp handles them very nicely so now, I need to test them thoroughly, wasn't able to get them clipping even with a considerable bass boost (pre amp tone control) but I need to do it with APO/Peace from the PC hooked in the pre amp.
Overall, satisfied with this pair of HPs as when I auditioned them a week ago. Let's see how I like them on the long run.
I really fancy this black and red pro version
(For anyone in Europe, I can tell you auditorium.de is a very reliable seller, competitive, fast, package was neat and they even wrote a dedicated very thoughtful note in french!).