RCA NTSC or PAL or S-Video Input to USB 2.0 Capture Adapter : ID 4715 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
USB Type-C to 2 RCA Male Stereo Audio Cable USB-C Jack Converter Adapter Cord US | eBay
Audio-Technica: 3.5mm to Male RCA Y-Cable Adaptor for AT-LP60x Series — TurntableLab.com
Audio Video to Stereo RCA Cable USB for iPod iPhone iPad 30 Pin Dock 4 Feet | eBay
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Toxaoii USB C to 2 RCA Audio Cable, Type-C to RCA Male Auxiliary Stereo Y
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Amazon.com: Duttek USB to RCA Cable,3 RCA to USB Cable,AV to USB, USB 2.0 Female to 3 RCA Male Video A/V Camcorder Adapter Cable for TV/Mac/PC 5feet/1.5M : Electronics
USB to RCA Cable USB2.0 Male to 3 RCA Male Coverter Stereo Audio Video Cable Television Adapter Wire AV A/V TV Adapter - AliExpress
Composite RCA S-Video Stereo Audio To USB Converter
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USB to 1/8" Straight-Tip (3.5mm) / Stereo RCA Audio Capture Device