this post was submitted on 14 Jun 2024
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Its the metal connectors between the bands/lines.
2 connectors = 1 signal (mono) + 1 ground
3 connectors = 2 signals (stereo) + 1 ground
OR, positive + negative + ground
Could be balanced mono.
![](https://www.boxcast.com/hs-fs/hubfs/Imported_Blog_Media/BlogImage-Quarter-Balanced-1.jpg)