Stereo Phono Preamplifier [RIAA Filter]

In the below exist a classic preamplifier PHONO of correction RIAA, for those who they insist they use disks of vinyl. For good precision in the reproduction of sound, should the materials that find in the negative feedback and correct RIAA, to be good quality, as resistors of 1% metal film, the capacitors polypropylene and Mylar.

The capacitor C8, adaptation in the input, can change with such price, so that it suits with the characteristics of cartridge that we will use. In the place of IC1 we can use also the LM833 or other completed low noise integrated circuit.

Modules for Stereo Input Channels For the modules of inputs stereo, exist two choices, that appear in the circuit below. The first choice in left, it is in symmetric input connection , while in the...
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