On March 18, 2019 at 09:47, highfigh said...
Impedance matching and using the correct signal levels are very important. If the impedance is mis-matched, it can cause problems with noise, frequency response, signal level and more. This stuff isn't made to mix & match, randomly.
Which means you completely skipped over my post. MANY pro mixers HAVE that feature built in. They will PROPERLY accept the input of balanced or unbalanced signals. There is a physical setting that takes place for each input, that allows it to accept both.
Again, many pro mixers have this feature. Just not all of them.