I have a Matrix mini i3 pro from a local reseller, from november 2020 untill now. Great piece of equipement, I spent many hours listening to music, using my Audeze LC2-Closed back with balanced cable.
Recently, from 2 or 3 days, I noticed a strange behaviour, the balanced amplifier seems always connected, no matter if the headphones are plugged in or not. This happens no matter if I listen from my computer, via USB, or stream from ROON. There is no click when plugging headphones or when I remove the jack. See the pictures for better explanations:
1 - Both headphones connected, the display shows both volumes (Normal behaviour)
![[图: se7gDFQ.png]](https://i.imgur.com/se7gDFQ.png)
2 - Only the balanced headphone connected, the display shows only the balanced volume (Normal behaviour)
![[图: O2d9Ml2.png]](https://i.imgur.com/O2d9Ml2.png)
3 - Only the unbalanced headphone connected, but the display shows both volumes, as if the other headphone is also connected (Not normal behaviour)
![[图: Jq929fP.png]](https://i.imgur.com/Jq929fP.png)
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4 - No headphone connected, but the display shows the balanced amplifier's volume and the headphones indicator (Not normal behaviour)
I6654545466uyytytiuiyiyuiiopopopui456456567545I iiiii - 8887676766g565689898uo89797666787865756456re54545a
Recently, from 2 or 3 days, I noticed a strange behaviour, the balanced amplifier seems always connected, no matter if the headphones are plugged in or not. This happens no matter if I listen from my computer, via USB, or stream from ROON. There is no click when plugging headphones or when I remove the jack. See the pictures for better explanations:
1 - Both headphones connected, the display shows both volumes (Normal behaviour)
![[图: se7gDFQ.png]](https://i.imgur.com/se7gDFQ.png)
2 - Only the balanced headphone connected, the display shows only the balanced volume (Normal behaviour)
![[图: O2d9Ml2.png]](https://i.imgur.com/O2d9Ml2.png)
3 - Only the unbalanced headphone connected, but the display shows both volumes, as if the other headphone is also connected (Not normal behaviour)
![[图: Jq929fP.png]](https://i.imgur.com/Jq929fP.png)
45454532232323
4 - No headphone connected, but the display shows the balanced amplifier's volume and the headphones indicator (Not normal behaviour)
I6654545466uyytytiuiyiyuiiopopopui456456567545I iiiii - 8887676766g565689898uo89797666787865756456re54545a
![[图: 6XC6uZM.png]](https://i.imgur.com/6XC6uZM.png)