The leckerton seems interesting too and, in addition to being a customizable amp, it doubles as a DAC which can come handy if I want to use it when I'm home.    The PB2 is definitely larger, its size arises from the battery pack and the fact that the amp has a 32v swing. I don't really have...

To be honest I'm not really a fan of Fiio's portable line. That portaphile 627 on the other hand does look interesting.    What about the ibasso pb2. It essentially has customizable sound based on what opamp configuration you use/desire. It comes with a set of 4 OPA604 opamps, and...

Oh, and I forgot to mention that the hd650 were a present, and considering their price when they were new and the length that I have owned them I wouldn't really be able to get a substantial offer for them at this stage. Therefore I prefer to keep them and purchase a portable amp to go with.

I understand what you're saying, and I've read all about the various shortcomings of the hd650, but for me they don't apply. I thankfully live in a very quiet part of the world, sweden, so noise isn't an issue. But to be more specific, I have used the hd650s straight from the iphone when riding...

The thing is that I don't listen to music when I'm home, and if I did/do I prefer a home audio system in that case. When I'm on the move I always have music playing and the hd650s are preferable over iems for me, and my iphone 5 can in no way get to their max. 

Hi guys, new to the forum. I have been scouring through a miriad of posts on portable amps and the hd650s, yet I am still nowhere near a final decision. My knowledge of what there is out there is limited, so I would like your help. I need suggestions in the 300 to 500 dollar range to be used...