Sound Blaster PLAY! 4 - Portable Plug-and-play Hi-res USB DAC with Auto Mute and Two-way Noise Cancellation via SmartComms Kit for Conference Calls - Creative Labs (United States)
Sound Blaster X3 - Hi-Res 7.1 Discrete External USB DAC and Amp Sound Card with Super X-Fi for PC and Mac - Creative Labs (United States)