Audio attenuator for microphone input

A small white 3d-printed box with a black label that says "line in" and "mic out".
The finished product. Label made with a Brother Label Printer.

Tape recorders, computers and capture cards all seem to be happy to accept a microphone input for adding audio or voice-overs, but very few have a “line input” to overlay music or any other “strong” signal source instead.

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