Sound Blaster X3 - Hi-Res 7.1 Discrete External USB DAC and Amp Sound Card with Super X-Fi for PC and Mac - Creative Labs (United States)
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
Used - Like New: Creative Sound Blaster X-Fi Surround 5.1 SB1090 5.1 Channels 24-bit 96KHz USB Interface Sound Card Sound Cards - Newegg.com
Hard Stuff: Sound Blaster X-Fi HD USB review | PC Gamer
Sound Blaster X4 - Hi-res 7.1 External USB DAC and Amp Sound Card with Super X-Fi® and SmartComms Kit for PC and Mac - Creative Labs (United States)
Amazon.com: Creative Sound Blaster X-Fi HD USB Audio System with Phono Preamp : Electronics
Amazon.com: Sound Blaster X1 Hi-res Super X-Fi External USB DAC and Headphone Amplifier for PC and Mac, Also Compatible with PS4, PS5, and Switch : Electronics
Creative Xmod review | TechSpot
Fiio E10 VS. Creative Sound Blaster X-FI 5.1 Pro USB Sound Card - Audio - Linus Tech Tips