The pc350 model has an Impedance of 150 Ohms. They are designed to be used with a headphone amplifier or a high end audio source.
FiiO E5 Headphone Amplifier - $19.99http://www.amazon.com/FiiO-E5-Headphone-Amplifier/dp/B002OG5GT8/ref=sr_1_13?ie=UTF8&s=electronics&qid=1261854637&sr=8-13
This will fix the "distant" effect he's hearing. The 2 together (the headphones and amp) will provide a recording studio like quality sound.
I do wish more reviews and ads for headphones pointed out the headphone amp requirement because it catches a lot of people off guard and they blame supposedly poor sound on the very high quality headphones because they weren't aware they needed to be paired up with an amplifier.