CREATIVE Sound Blaster Audigy FX PCIe 5.1 Internal Sound Card with High Performance Headphone Amp for PCs : Amazon.co.uk: Computers & Accessories
Zunate USB 7.1 External Sound Card, USB DAC and Amp Sound Card, Dual 3.5mm Mic in, Optical in, Optical Out, for PC Laptop Computer Speakers System : Amazon.co.uk: Computers & Accessories
HyperX Amp USB Sound Card 2020 Review — World Bolding
Sound Blaster X3 Hi-Res External USB DAC and Amp Sound Card with Super X-Fi Holographic Audio, 7.1 Discrete Surround and Dolby Digital Live with Line-in and Optical-out for PC and Mac :