So I have a Clip + and just got a stereo with a line in for it. I want more volume from the Clip + and the stereo. Will any amp work for this? I have an E5, but I hate the hiss that comes out of in during moments of no music. I am sure that it is still there during when the music plays, but it is really noticeable during slow silent parts. It bugs me to the point that I will not listen through it any more.