The fiio e6 is alright... but if I were you I'd wait till youve got funds to move up and buy the e7. I've heard the e11 is decent but have not tried it personally. Some may argue otherwise but I've always believed in saving up and buying something you know you will get the most out of.. in this case, for the ath-m50s. Dunno if you have looked into the electric-avenues PA2V2, but for the price I was very pleasantly surprised by how good they sounded with my m50s. Also, Gary was extremely helpful when I asked him about the amp, he actually customized the internal setting to work the best with the m50s. It's a little on the non-slick side, but if you like retro looking objects you'll love this amp for sure.