I would recommend you to buy Creative Labs SB0950 ExpressCard Sound Blaster X-Fi Notebook USB Audio System
*24-bit Analog-to-Digital conversion of analog inputs at 48 kHz sampling rate
*16-bit Digital-to-Analog conversion of stereo digital sources at 48 kHz to stereo output
*16-bit recording sampling rates - 8, 11.025, 16, 22.05, 24, 32, 44.1, and 48 kHz
*X-Fi CMSS-3D provides a multichannel playback experience over headphones or loudspeakers for all types of content
*Connectivity - 3.5mm (1/8) stereo jack for Analog Line In or Microphone In, One 3.5mm (1/8) stereo jack for Analog Line Out or Headphones
http://www.amazon.com/Creative-Labs-ExpressCard-Blaster-Notebook/dp/B001BS3A3E/?tag=klnprk-20
Also check out at Ebay
http://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&pub=5574865779&toolid=10001&campid=5336440665&customid=klnprk&mpre=http%3a%2f%2fshop.ebay.com%2fi.html%3f_nkw%3dheadphone%26_sacat%3d0%26_odkw%3dheadphone%26_osacat%3d0%26_trksid%3dp3286.c0.m270.l1313