The balanced XLR inputs for microphones with phantom power function properly. All other inputs (whether jack or RCA) prepare an infinite number of problems with asymmetrical signal. No other amplifier whistles and hums as much if you simply connect a PC or a tablet. Even a Nexus tablet without charger whistles unbearable sobalt the display of Tablest is on. If you still connect a charger, it is quite listless. Same problem just with the sound card of computers. Tested with 3 different high-quality sound card (which otherwise do not have problems with active boxes or other consoles). Even the use of an active DI BOX (Behringer ULTRA-DI4000) changes in the problem hardly anything.
