Amazon.com: Blind Spot - Power Pipe Version 2-12 Volt Trigger Cable - USBC to 12V - Create a 12 Volt Battery, 12 Volt USB Outlet Using PD USBC Power Banks - Turn
Amazon.com: BobWire DAT1 Adds a 12V Trigger! Compatible with SONOS Connect, Echo Link, ChromeCast Audio, TV, Anything with an Optical Audio Out. Auto Power On Amplifiers & Fans. NOT Compatible with AV
Little Things: Triggering Multiple Amplifiers From A Single 12V Trigger - HomeTheaterHifi.com
TX-NR7100 - 12V Trigger Out Jack – Onkyo Product Support