Hi. I am refurbishing A allen and heath GS3V professional recording studio console.
as it's a 80's design i want to upgrade the opamps witch are the TL072CP.
they are in a VCA mode (voltage controlled amplifier.) set up,
i would like to know with what up to date opamp i can replace it.
acurate sound reproduction low noise is the main thing and goal.
hope you can give me some advise