Audio Amplifier
SIP13
+------+
++ 13| IP2
| 12| NC
| 11| M/SS
| 10| VP2
| 9| OUT2B
| 8| GND2
| 7| OUT2A
| 6| OUT1B
| 5| GND1
| 4| OUT1A
| 3| VP1
| 2| GND
++ 1| IP1
+------+
No frequency to check