MohawkUS
1000+ Head-Fier
I don't think I would say that they need an amp, but with some songs I can almost hear my Essence running out of power and start to distort. Maybe the 2900 needs more power?
Scroll up three posts. They were already reaching the "sounds fairly nice" level without an amp, but it's completely different now. As for my MP3 player though, it definitely needed an amp to use these.
if your aren't listening to bass heavy music, get an amp.
It's ironic that you say this. I know what you mean, but the music I'm currently enjoying has a lot of drumming and bass guitar. And oh my god does it sound better than I've ever heard before.