I did some further searching and found high voltage opamps.
I just downloaded the datasheet for OPA445, prior to reading your reply.
It's the driver stage in an integrated amplifier.
The preamp opamps are "mutilated" as well, but since they are also BB and have supplies of +/-22V on pins 8 and 4, good chance they are OPA2604's.
Stills thanks Elso.
I just downloaded the datasheet for OPA445, prior to reading your reply.
It's the driver stage in an integrated amplifier.
The preamp opamps are "mutilated" as well, but since they are also BB and have supplies of +/-22V on pins 8 and 4, good chance they are OPA2604's.
Stills thanks Elso.
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