Here is a delightful little portable headphone from Beyerdynamic, and unlike most of their other low-end portables, this is a real (made in Germany) Beyer with their famous earcup forks and all. The signature is much flatter than the Beyer mini-Teslas (T51p, DT1350, ....), with better extension on both ends - I love it.
Beyerdynamic Custom Street On-Ear Stereo Headphone review | Headphones Hangout Forum