If I were you, I'd get a high-quality external sound card and use the audio output on that. The headphone output on Dell notebooks is kinda noisy and their A/D conversion is noticably lacking. I use Sony MDR-7506 headphones with mine, and I can hear EVERYTHING, and believe me, it leaves something to be desired. If I were you, I'd look at going for an external Audigy 2 or maybe an M-Audio Audiophile USB.