Amazon.com: Creative Labs Sound Blaster Play! 3 External USB Sound Adapter for Windows and Mac. Plug and Play (No Drivers Required). Upgrade to 24-Bit 96Khz Playback : Electronics
Amazon.com: Creative Sound Blaster X4 External USB DAC Amp with Super X-Fi, 7.1 Surround, Optical I/O, Mic/Headset/Line-in - For PC and Mac : Electronics