I am using my SunSDR2 pro with Software "ExpertSDR2 v.1.3.1 Update2" on a Linux system.
Mostly I am active in digital modes. ExpertSDR2 is running in DIGU-mode and connected via VAC to programs like JTDX, WSJT-X or fldigi.
During a test with the audio-system, I listen this signal on a headphone. It sounds to me, that the left and the right channel are not equal. The sound is like a signal from USB-mode, when the binaural function is switched on. But in DIGU-mode this option can not be switched on or off.
Can you please verify if there is a bug in the software? In DIGU/L-mode, the signals should be transferred to the decoder software as original as possible.