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M-Audio
Sound Blaster X3 - Tarjeta USB DAC y Amp discreta externa de alta resolución 7.1 con Super X-Fi para PC y Mac - Creative Labs (España)
TARJETA DE SONIDO USB 7.1 PLUS - Jaltech SAS
Household External Virtual USB7.1 3D Sound Audio Card Adapter Dual Microphone Dual Audio Interface Output Independent Sound Card - AliExpress
M-Audio
TARJETA SONIDO USB 7.1 – Puntonet Insuperable
Scarlett 2i2 Studio
7.1 USB SOUND CARD: This External Sound Card adds up to 7.1 channels of audio through a single USB port to your computer; This sound card supports
StarTech.com 7.1 USB Sound Card - External Sound Card for Laptop with SPDIF Digital Audio - Sound Card for PC - Silver (ICUSBAUDIO7D)
TARJETA DE SONIDO USB 7.1 PLUS - Quorum System
Turn your laptop or desktop computer into a 7.1-channel home theater-ready sound system. This versatile External USB Sound Card/Audio Adapter offers a high quality solution for upgrading desktop or laptop sound. Providing a robust USB audio experience, the USB sound card connects to a host computer through a single USB 2.0 connection, to deliver impressive external audio capability that can instantly be swapped between systems, without having to open the computer case for installation.
StarTech 7.1 USB Audio Adapter Sound with SPDIF Digital Audio USB 2.0 Sound Card - 7.1 Channel
Tarjeta Sonido 7.1 Convertidor Usb Audio Microfono Audifonos
StarTech.com 7.1 USB Sound Card - External Sound Card for Laptop with SPDIF Digital Audio - Sound Card for PC - Silver (ICUSBAUDIO7D) : Electronics