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How to...Connecting stereo outputs to mono input
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Amazon.com: OSD Audio SMC21 Stereo to Mono Converter – Gold-Plated RCA Connections and 1:1 Ratio Audio Transformer : Electronics
Play your stereo music into a mono amplifier with this easy project! - YouTube
Rca Mono Rca Stereo Adapter | Summing Cable Mono Stereo | Stereo Mono Audio - Stereo - Aliexpress
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Stereo to mono summing circuit? - Techtalk Speaker Building, Audio, Video Discussion Forum
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3.5mm 3-to-2-Conductor Plug, Gold-Plated Mono-to-Stereo Adapter
