StarTech 7.1 Channel Sound Card - PCI Express - 24-bit - 192KHz - SPDIF Digital Optical and 3.5mm Analog Audio : Amazon.in: Computers & Accessories
5.1/7.1 channel support from standard 3 audio jack output motherboard - CPUs, Motherboards, and Memory - Linus Tech Tips
Crestron HD-XSP High-Definition 7.1 Surround Sound Processor | Full Compass Systems
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