This amplifier is ideal for those who have an old tape player and want to recover recordings on this media by switching to CDs or MP3s. The circuit is connected to the input of the new media recovering the signals with the correct NAB equalization. The circuit, from an old American publication, uses an unusual integrated circuit that is the critical element of the project. The source has a high voltage, but consumption is low. The circuit can be adapted to use more common amplifiers like the 741 and a lower supply voltage, between 9 and 15 V, for example.
