I just ordered the Beyerdynamic DT1350. Since these headphones seem to react well to amplification, I'd like to get my first and only portable headphone amp to use with them. The amp should serve me as a long-term investment, so it should not only work well with the DT1350, but all my future portable headphones.
First I looked for small, rechargeable amps like the RSA Shadow and P-51 Mustang, but reading about them, made me confused whether these are made for full-sized headphones or IEMs, and therefore wonder if these are the right amps for me. I'm even more relunctant since I'm also planning to use the amp for all my future phones.
So my head turns to amps like RSA SR-71A and Corda Stepdance. From what I've read here, these seem to do the trick for most headphones, but the fact that it uses 9V batteries is kind of a turn-off. I'd rather not change the battery every 30 hours.
So I'm confused. What should I pick? Any suggestions?