and sorry for my very basic English.
I have a passive preamp diy ldr3x v2.1 balanced configuration.
since a few weeks, I lose the calibration.
if I listen to an evening for example, it's ok and the next day when I turn on the preamp I have no sound on one side or very weak ... and it's difficult to make a calibration that works .
when it works I have breath on a speaker.
Do you think I have one or more ldr hs?
ps: I flash with the latest firmware .... but the same.