Audio Optical Cable Extender | Optical Audio Link Cable | Audio Extender Lan - 500m - Aliexpress
Vanco International | Analog Audio over Cat5e/Cat6 Cable Extender
AUX Headphone 3.5mm Extension Cable (30 Feet) - Male to Female Extender Audio Auxiliary Jack Adapter Wire Cord Plug Connector for iPhone iPod iPad, Smartphone Tablet, Home Car Speaker System - Walmart.com
Audio / AMP over IP TX Extender, with Mic – Muxlab Dealer Portal
Stereo Audio Headphones Mini Plug Extension Cable – 12Feet
Ethereal Digital Audio Ethernet Extender Kit Send a digital audio signal from one part of the house to another over Ethernet cable at Crutchfield
Amazon.com: Analog Audio Extender RCA 3.5mm Stereo Over Ethernet Single Cat5e/6/7 Cable up to 1475 Ft (450m) Converter Adapter Support PCM Stereo POC(Power on Cat) : Electronics