HI Everyone, This is my first thread in head-fi, I enjoy listening to music extensively. I have a HM5 and sony in ear monitors. I will go mid range headphone soon but haven't unleashed the full power of my HM5's yet. I will listen music from galaxy s2 320kbps files using poweramp or nrg player which are good. But still from many of audiophiles I heard s2 has crap yamaha chip which cannot be amped through FIIO's or some other amplifiers. Please suggest me good audio source + amp or DAC . I have researched over cowon J3 and apple ipod touch and sansa clip + they talk about UI no one says about sound quality any comments?