So I have a pair of the old bose in ears(the ones without the right angle plug) and since they see a fair amount of abuse in my pocket and such the connection from the wire to the fat plug has seemed to stopped working properly. Now I can only hear music through one ear and if I finagle the wire...

So I've just started to get into high quality audio and enjoy hearing the fine nuances of my music. I currently have a set of Shure SRH840s. I like them a lot but am also thinking about making a headphone amp to compliment them. I wouldn't be buying one, I have access to the equipment and...