As I understand the JRC 1468 should be referred to as 4558 which is a double opamp, used in for an example MS20. Could you confirm the following pin config: 1 OUT (1) 2 -IN (1) 3 +IN (1) 4 -V 5 +IN (2) 6 -IN (2) 7 OUT (2) 8 +V Regards Niklas