The thread of compatible Surround Sound USB devices for Switch : r/NintendoSwitch
Amazon.com: USB Sound Card 1Mii 7.1 Surround Sound Card for 3.5mm Gaming Headsets Earphones USB Audio Adapter Sound Card for PC Windows 10 USB to 3.5mm Jack Audio Adapter No Drivers Needed :
USB Multi-Channel Sound Converter With 5.1 Channel Surround
Razer Kraken Ultimate USB Surround Sound Headset - ElectroMall
Connectors USB External Sound Adapter 7.1 5.1 Channel 3D Surround Heavy Bass 6 Sound Effects USB Sound Card Audio Adapter for PC Computer - (CN, Color :B09CNBV1ZF:Import Vie.Terrasse - 通販 - Yahoo!ショッピング
Amazon.com: USB Surround Sound Converter with Digital Optical Audio Input Output : Electronics
Sandberg Savage Gaming Headset 7.1 surround sound (USB-A)
Amazon.com: USB Sound Card 1Mii 7.1 Surround Sound Card for 3.5mm Gaming Headsets Earphones USB Audio Adapter Sound Card for PC Windows 10 USB to 3.5mm Jack Audio Adapter No Drivers Needed :
USB 5.1 Multi-Channel Surround Sound Adapter With Optical Audio Input Output - Walmart.com
Amazon.com: [Upgrade] 1Mii USB Sound Card USB to 3.5mm Jack Audio Adapter - Virtual 7.1 Surround Sound - USB Adapter for PS4/PC/MAC/Stereo Headsets, External Sound Card No Drivers Needed Plug and Play :
Alternatives to using the Corsair HS60 USB Surround Sound Adapter - Audio - Linus Tech Tips