This circuit with RIAA equalization is from 1985 US documentation. The circuit has a flat response of 150 Hz to 40 kHz. The power supply must be symmetrical.
The Texas Instruments INA826S Instrumentation Amplifier Evaluation Module is available from Mouser...
The basic idea of this circuit is to indicate the tolerance of a capacitor by reference to a...
The circuit shown in the figure is a high-power version for Metronome 1, exciting an ordinary...