GotFrag Hardware (dead link) reviews Sennheiser HD435 and concludes with rating of 7 out of 10 that “given the audiophile market that is the HD435’s birthright, we were happy to find an in-line volume control. It is common to find these not included in high-end headsets, and it is a fairly important thing for gamers to have. Therefore we were happy to see it on here. Accessory-wise, the headset comes with a ¼” adapter in case you want to plug the headphone into something bigger than its default 1/8” plug, although it isn’t a very common plug to have on a PC. Finally, the thing that most caught our eye was the carrying bag. We’re not talking some cheap plastic baggie; this is the type of stuff Crown Royal comes in. It’s a very soft, jet-black bag with rip cords to keep the precious cargo shut in. It is a very nice extra to just be thrown in by Sennheiser. Whoever thought of that in the marketing department needs a medal.” GotFrag Hardware (dead link) also reviews Sennheiser HD555 and concludes with rating of 9 out of 10 that the HD555 is a no-frills, no-nonsense device that sells itself on its abilities. The only included device that’s really worth mentioning is the 1/4′” to 1/8” adapter, which would be a must-have for anyone doing PC gaming. Beyond that, the HD555 is simply what it is.