Just got my pair yesterday. Mostly happy. The bass sounds good but it feels just out of reach. Also, finding a good fit has been (unsurprisingly) difficult. I'm thinking about buying this but I'm worried it's too long:http://www.amazon.com/Replacement-Leatherette-function-Sennheiser-Beyerdynamic/dp/B00862522A
Anyone have thoughts/tried something else?
Ha! I made mention of using a Beyer headband pad in the old thread. Honestly, after tweaking the fit I have little to complain about concerning comfort and have no need to purchase one.
Regarding bass performance, when running these unamped I find both quantity and quality to be sufficient. Ran through my Icon HD, however, the low-end rumble is on a different level. They thankfully don't turn into a bloated mess, but instead bass-heavy content gives my ear canals that exciting tickle/massage without giving up any articulation. As a revision to the statement in my original post, after more extensive listening I've concluded that these are actually giving me MORE bass quantity than my HD600. The Senn is the more "musical" of the two to my ears thanks to its smooth presentation, but the K550 is the more articulate and better nuanced headphone with greater detail and more precise placement within the soundstage.
As an aside, I must state that I couldn't be happier with my decision to give up a pursuit of perfection and "downgrade." While there are better performing high-end/priced options, finding great kit at reasonable prices has helped to remind me how quickly the law of diminishing returns kicks in with personal audio... and also how under-performing some headphones are at any price point.