This circuit is from 1967 General Electric documentation. It uses SUS which are not very common components today. The maximum frequency should not exceed a few kilohertz.
April 2017 - Mouser Electronics already has the MAX4007 from Maxim Integrated in its inventory, an...
This circuit with RIAA equalization is from 1985 US documentation. The circuit has a flat response...
The IC used in this project is not common these days, but if you have one you can build a high...