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1m 3.5mm Stereo Plug to 2x Mono Jack Adapter Cable AUX Audio Line Splitter Lead | eBay
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Amazon.com: 3.5mm Mono Right Angle, 1/8" Mono Male to Mono Female 90 Degree Adapter Connector Plug for 3.5mm Mono Audio Extension Cable (2-Pack) : Electronics
1/4" Stereo Audio Jack Plug Adapter Single Male to Female 6.35mm Dual Mono Stereo Jack Headphone Microphone Y Splitter Converter - AliExpress