I am a newbie to the portable headphone amps. I just bought an Apple Ipod Classic 160GB and a pair of Shure SE353 and Sennheiser HD 650. I am looking for a portable DAC with amplifier but not shure what to buy. I was leaning toward the Fostex HP-P1 and not sure if this is a good fit with the gear I have. I just bought a PAV2 Headphone Amplifier from Gary due to it ranked #1 in the forum and price was affordable. Any advices would be greatly Appreciated.