This RIAA equalizer preamp was found in a 1990s schematic. The transistors are an old version of the BC549 that can be used as a replacement. Signal input and output cable must be shielded.
September 2016 - It can be obtained from Mouser Electronics modules with 2.4 inch from 4D Systems...
We found this circuit in an American documentation. The power of the load, in this case,...
The maximum amplitude of the input signals must be 5 volts and the power supply must be...