XM-604M car amplifier is produced by Sony and can deliver up to 60W x 4 RMS into 4 ohms or 70W x 4 RMS into 2 ohms and you can use it at 160W x 1 RMS into 4 ohms (Rear). It has a 80 Hz Selectable HPF/LPF and a 600W Max Power consumption. continue reading…