Computer audio / earphone output to mic mixer input

FAQ #3109 Updated October 27, 2008


I require a device to connect a laptop computer audio output to a mic mixer or input.


The earphone/headphone output from a computer is low impedance, unbalanced, and has a typical signal level of 100 millivolts. It can be connected to an aux input on a mixer, or a high impedance mic input on a mixer. Required is a cable with the proper connectors on each end.

If the mixer only has a low impedance mic input, the computer earphone output can be connected to the 33,000 ohm side of a Shure A15BT Bridging Transformer. The 600 ohm side of the A15BT connects to the mic input.

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