Hi quality Phono Preamplifier

Posted on Feb 15, 2013

In recent years, following CD`s introduction, vinyl recordings are almost disappeared. Nevertheless, a phono preamplifier is still useful for listening old vinyl discs from a well preserved collection. This simple but efficient circuit devised for cheap moving-magnet cartridges, can be used in connection with both audio power amplifiers shown in preceding pages, featuring low noise, good RIAA frequency response curve, low distortion and good high frequency transients behaviour due to passive equalization in the 1 to 20KHz range.

Hi quality Phono Preamplifier
Click here to download the full size of the above Circuit.

Transistors and associated components provide ± 18V supply to the op-amp, improving headroom and maximum output voltage. Notes: * R2, R3, R4, R7, R8, C4 & C5 should be low tolerance types. * Schematic shows left cha

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