USB 2.0 External Virtual 7.1 Surround Sound Adapter - SD-CM-UAUD71
ALP442e-MIC - Multi-channel PCIe sound card with Mic/Line inputs - Digigram
4-Channel PC-Based Quad Video Switcher + USB DVR Adapter | eBay
Amazon.com: LEAGY USB 7.1 External Sound Card (8-Channel) - 7.1 Channel USB Soundbox - Dynamic 3D Surround Sound - UP to 8 Speakers - Simultaneous Recording and Playback - Analog and Digital Audio Equipment : Electronics
Amazon.com: zdyCGTime Hi-Speed USB 2.0 7.1-Channel Virtual USB 3D Stereo Audio Adapter External Sound Card with 3.5 mm Audio and Microphone Ports, Internal Amplifier and Volume Controls : Electronics
How to mix multi-channel input device and down to mono - Softonic
ADA-71 USB 7.1 SOUNDbox | Axagon
US-2x2 | USB Audio / MIDI Interface | TASCAM - United States
Creative Sound Blaster X4 Hi-Res 24bit/192kHz External USB DAC and Amp Sound Card, Super X-Fi, Multi-Channel, 7.1 Discrete Surround, Optical-in, Optical-out, Line-in, Mic-in, Headset-in for PC and Mac - Newegg.com
USB External 7.1 Channel Audio Adapter - Vantec Thermal Technologies (VantecUSA)
Amazon.com: LEAGY USB 7.1 External Sound Card (8-Channel) - 7.1 Channel USB Soundbox - Dynamic 3D Surround Sound - UP to 8 Speakers - Simultaneous Recording and Playback - Analog and Digital Audio Equipment : Electronics
Delock Products 63926 Delock External USB 2.0 Sound Adapter Virtual 7.1 - 24 bit / 96 kHz with S/PDIF
Sound Blaster X4 - Hi-res 7.1 External USB DAC and Amp Sound Card with Super X-Fi® and SmartComms Kit for PC and Mac - Creative Labs (United States)
Amazon.com: StarTech.com 7.1 USB Sound Card - External Sound Card for Laptop with SPDIF Digital Audio - Sound Card for PC - Silver (ICUSBAUDIO7D) : Electronics
C-MEDIA CM6206 5.1 USB Audio Sound Card Line-In & Line-Out Bass Extension Low Frequency Response Upgrade - TehnoBlog.org
US-2x2 | USB Audio / MIDI Interface | TASCAM - United States
US-2x2 | USB Audio / MIDI Interface | TASCAM - United States
Download Realtek HD Audio Drivers x64 2.82 for Windows - Filehippo.com
Delock Products 63926 Delock External USB 2.0 Sound Adapter Virtual 7.1 - 24 bit / 96 kHz with S/PDIF
Sound Blaster Audigy Rx - Sound Blaster - Creative Labs (United States)
ADA-71 USB 7.1 SOUNDbox | Axagon
UAC-8 USB Audio Interface | ZOOM
UAC-2 USB Audio Converter | ZOOM
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)
