Hello good night, friends, I have a kicker 700.5 amplifier in my workbench and it does not emit sound, I found some j fet transistors (j108) that would like to know what their function is in this amplifier, because when I remove them it works wonderfully, they are the Q23, Q301, Q401, Q501 and Q601. All J108 if someone could guide me on their role in that part. Thanks for help me.
