Unbalanced Mono Audio Signal Transfer This XLR male to 3.5mm cable combines the left and right stereo signal from a source with 3.5mm stereo output to a single mono feed, This is an Unbalanced cable, the L and R channels are soldered together making a mono signal to XLR Pin 2, the XLR Pin 1 and Pin 3 are shorted to ground, it is not suitable for most 'balanced' applications.
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