I use the UR12 firmware V 1.01 sound card.
USB Driver v.1.10.1 (I tried early versions).
Windows 10 (64 bit) (I tried Windows 7 64 bit, Mac OS High Sierra 10.13.6)
Connection of the sound card directly to the USB socket (I tried on different USB 2.0 and USB 3.0 computers).
Problem with work at overload of a sound.
I use the guitar BIAS Amp 2 programs (64-bit), Guitar Rig 5.
At inclusion of overload for a guitar the background in earphones in the form of peep is distributed even if the guitar is not connected.
What to do?