No amp gretly limits you choices and knocks out the planar HE 400.
I--and probably most other regulars on this thread--have not heard the IEM you like. I don't see how bassy cans would work well with classical, jazz, pop and even rock. However, they'll be going on your head and not mine.
You should check out the Grado RS-2i, Alessandro MS-2i, Audio Technica ATH-ES10, Audio Technica ATHESW9A, Beyer DT 1350, Senn Momentum, and V-Moda M-100.
Thanks for that KG,
Yea I'm just entering the hi-fi world so first off I'm getting the headphones and I'll slowly but surely build my set up.
Yes although I listen to varied genres I still enjoy my bass in all of them.
Thank you for the recommendations as well,
I heard that the HE-400 has a low impendance? Does this still mean I cannot use them unamped?