Make the Volume Knob of Sound Blaster X-Fi Surround 5.1 Pro Sound Card Work in Raspberry Pi : 12 Steps - Instructables
Creative Sound Blaster X-Fi Surround 5.1 Pro USB Sound Card for Computers and laptops : Amazon.in: Electronics
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 : Amazon.co.uk: Computers &
Creative X-Fi Xmod USB sound card review | TechRadar