Installation of LocoFi™ - the WiFi sound decoder module in older Athearn Blue Box locomotive on Vimeo
Snapklik.com : Sound Decoder, 51CH Digital Sound Decoder, Support HDCP 2.3 2.2 1.4, Digital Sound Extractor Converter, Multifunctional Audio Extractor
Tritton AX 720 v1.0 Decoder Box Only Dolby 5.1 Surround Sound - International Society of Hypertension
Amazon.com: Bluetooth Sound Receiver Decoder, Wireless Bluetooth 5.1 Sound Adapter HiFi Decoder with RCA, Headphone Jack (US Plug) : Electronics
Modems
HDMI 5.1 Audio Converter Decoder DAC DTS AC3 FLAC PCUSB APE 4K*2K HDMI to HDMI Extractor Converter Splitter Digital SPDIF ARC, Digital Analog Audio Video Surround Sound System 192Khz/24Bit for Movies -