Problems with XLR in JM4 Looper in JM4 Looper Posted May 20 Olá! I´m having problems to input a Microphone in XLR entrance in . The JM4 Looper doesn´t keep the parameters on configuration and the sounds are really awfully bad. Otherwise at AUX entrance it becomes better, but still sufferable. Does anyone can help me on this matter? Elbows for Everybody!