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Originally Posted by Esteban
No, put socket and try, and some Korean brands don't work well at the epoch I start with it, 10 years ago, so decide use Toshiba or any other Japanese brand as Hitachi, the both works fine, good level audio in the 3130 output.
Use Japanese because at the epoch I start found it in my market, no USA 4066 found, but now yes.
3130 is very obsolete, but is very sensitive and also very delicate, solder must be to ground.
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The CA3130E is a mosfet input, CMOS output opamp. You should be able to replace this with a CA3140E which is a mosfet input, bipolar output device.
I would also think that either an LF353N, OPA2604AP, TL072CN or TL082CN would be ok. The one with the lowest noise figure is the OPA2604AP at 10nV/Hz.