Audio Amplifier
SIP12
+------+
++ 12| BS (M)
| 11| Vcc
| 10| OUT (M)
| 9| BS (I)
| 8| OUT (I)
| 7| GND (OUT)
| 6| AM
| 5| BP
| 4| FB
| 3| GND (IN)
| 2| NC
++ 1| IN
+------+
No frequency to check