I use the SE215, yup cant fit. Had to use the extender cable from the SE102 to use my 215's.

It came in the package with the SE102 

http://www.amazon.com/Shure-EAC3BK-Extensi...s/dp/B00GBC9OU8
Something like this

Tempered glass is for people who have bought new phones...after 3 months, just remove them

just invest on a good one that doesnt affect the touch responsiveness mah can lor...

Ah sorry. When you mentioned Yodobashi, I just assumed you meant the ones in Tokyo.

Please take note that most full-size headphones like your ATH-M50x (good headphone, btw) tend to have quite fat plugs (the actual jack is standard 3.5mm, but I'm talking about the plastic/metal enclosure around the jack), so you might want to pay extra attention to the headphone jack opening on the cases you try. I can tell you that my AndMesh case wont fit the M50x stock plug, though it's fine for the Oyaide connectors on my current pair of custom IEMs.

I suppose that's one good point of Spigen and other brands that have "compatible with Beats by Dre" in their marketing/ads. Beats isn't the best headphone in terms of sound, but their plugs are quite big so if a case is advertised as being compatible with them then you can be certain that it'll accept just about any brand of headphone plug.