Amazon.com: 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 : Electronics
Amazon.com: Schiit Fulla E Headphone DAC/Amp with Mic Input for Gaming and Communications
Schiit Audio: Audio Products Designed and Built in Texas and California
Sound BlasterX G6 7.1 HD Gaming DAC and External USB Sound Card with Xamp Headphone Amplifier for PS4, Xbox One, Nintendo Switch, and PC. - Creative Labs (United States)
What HEADPHONES, MICS & AMPS Do I Use? Ft. Mayflower ARC DAC/AMP/ADC Combo - YouTube