I'm still waiting for a microphone that's coming out of a three to four pin mini-xlr adapter: Plug one side into the headphone, the other takes the cable (now with three instead of two leads (plus shielding/ground)), voila, a headset.

Also Sennheiser's build quality at the lower end it atrocious. Sennheisers priced in the same ballpark as e.g. AKG K240s might be a bit more neutral but you probably don't have the ears to notice and a) no replaceable cable b) you can't step on them and they'll be fine (K240s are what recording studios whip out when a punk band comes in with three crates of beer) and c) they fit like ass and the plastic creaks like a motherfucker.

(Also to be fair to make a K240 nice you'll have to invest what ~20 bucks into velour pads, and another 20 into a proper cable (the included one is shoddy and will break at the earliest opportunity. 15 for the connectors ("neutrik/rean or bust"), the rest for the actual cable, make it as long as you want impedance doesn't care. Plus maybe two connectors more to have a predetermined breaking point. Soldering iron not included. Also wash your fucking ear pads)