CAAB-E3112, 2 Ports True 4K USB-C KVM Switch with DisplayPort output and 3.5mm analog audio function
Nintendo Switch works with USB audio DACs : r/NintendoSwitch
TESmart | 2-Port KVM HDMI Video Switch - 4K 60Hz UHD - Audio Output, USB Sharing – BuyTESmart.com
The thread of compatible Surround Sound USB devices for Switch : r/NintendoSwitch
VALUE KVM Switch, 1 User - 4 PCs, 4K HDMI, USB, Audio, USB Hub - SECOMP International AG
Buy HDMI KVM Switch 4 Port, 4 Port HDMI 2.0 USB 3.0 KVM Switch with Cables, 2 pcs USB 3.0 Hub and Audio Output Supports Wireless/Mechanical/Gaming Keyboard Mouse Online in Japan. B092V2K4GT
4-Port USB 3.0 4K HDMI KVMP™ Switch with Audio Mixer Mode - CS1824, ATEN Desktop KVM Switches | ATEN Belgium - English
KVM Switch Compact USB Audio, 2 Port - from LINDY UK
Creative Sound Blaster G3 Portable External Console Gaming USB-C DAC Amp for PlayStation 4, Nintendo Switch, PC, and Mac - Newegg.com
2 Port USB KVM Switch w/ Audio & Cables - KVM Switches
Buy TESmart 2 Port HDMI KVM Switch 4K@60Hz 4:4:4 Ultra HD 2 PCs 1 Monitor with Extra USB 2.0 Port&L/R Audio Output Control up to 2 PCs/Servers/DVR includes 2 pcs of 1.5
2-Port HDMI 2.0a & Audio KVM Switch with USB 3.0 Hub | gofanco
VALUE KVM Switch, 1 User - 4 PCs, 4K HDMI, USB, Audio, USB Hub - SECOMP International AG
Black Box 4-Port DVI KVM Switch USB Audio 2-port USB Hub 1080p Push Button - KV9604A - -
IOGEAR 2-Port USB Cable KVM Switch with Audio and Mic GCS72U B&H
DEPZOL 2 Port USB 3.0 KVM Switch Dual Monitor HDMI 4K 60Hz, Keyboard V
How to use a DAC to improve audio quality on your Nintendo Switch | iMore
Smart-AVI DPN-2P 2-Port DisplayPort KVM Switch with USB DPN-2P-S
CAAB-E3112, 2 Ports True 4K USB-C KVM Switch with DisplayPort output and 3.5mm analog audio function