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.in: Electronics
Used 100% Working Creative Sb1040 Sound Blaster X-fi Xtreme Audio Pci-e Sound Card Sound Output Mode: 7.1 - Pc Hardware Cables & Adapters - AliExpress
Tried an external sound card: the Creative Sound Blaster X3