PulseAudio Stereo to Mono Audio Converter
The PA-SM21 Stereo to Mono Audio Converter can convert a stereo line level audio signal to a balanced mono audio output through the 3-pin terminal connecter. It can also adapt a balanced mono audio signal to an unbalanced mono audio signal using the dual RCA outputs. Small, compact and mountable metal chassis makes it a nice and easy solution when looking to convert your audio signal.