A phono preamplifier is an electronic device that amplifies the weak electrical signals produced by a turntable when playing vinyl records. These signals are too low to be processed by standard audio equipment, so the phono preamp boosts them to a level suitable for further amplification by a stereo receiver or amplifier. In addition to amplification, a phono preamp applies equalization to the signal, correcting the frequency response to match the RIAA standard. This ensures that the sound quality is preserved and enhanced, allowing listeners to enjoy the full richness of their vinyl records.