The following description shows the balanced analog audio output connection to external unbalanced and/or stereo audio devices.

An unbalanced source can be a chinch or a jack plug.

In some cases ground loops can generate humming noise. In this case use audio transformer to electrically isolate the digital audio matrix from the external device.

Connect an unbalanced analog audio device to a balanced analog audio output

Connect

To

Unbalanced analog audio device

Balanced analog audio output

GND

'Audio out –' (3) and GND (2)

'Signal'

'Audio out +' (1)

Connect an unbalanced stereo analog audio source to a balanced analog audio output

Connect

To

Unbalanced analog audio stereo device

Balanced analog audio output

GND

'Audio out –' (3) and GND (2)

Signal ‘R+' and signal 'L+' in parallel

'Audio out +' (1)

Connect a balanced stereo analog audio source to a balanced analog audio input

Connect

To

Balanced analog audio stereo device

Balanced analog audio output

GND R and GND L in parallel

GND (2)

Signal ‘R-' and signal 'L-' in parallel

'Audio out -' (3)

Signal ‘R+' and signal 'L+' in parallel

'Audio out +' (1)