This mono to stereo adapter cable is designed to split a mono signal from a 1/4 output into both channels (left and right channel) of a 3.5 mm input It could be used to connect a mixing console guitar amp bass mono radio to a portable media player cell phone laptop recording device or similar device. This 1/4 mono to 3.5 mm stereo cable only used as a mono (output) to stereo (input) connect if it used as a stereo (output) to mono (input) this could burnout the stereo output stage of the device. The 3.5 mm plug is a standard 3 pole (2 rings and a tip) connector This won't work on a Smartphone that has a 4 Pole TRRS port.

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