Sony Phono Preamplifier

Sony Phono preamplifier used in some integrated amplifiers (RIAA curve) Easy to DIY, good and affordable sound Recommended opamps for MM (Moving Magnet) Cartridges • Texas Instruments OPA1612 / OPA1611 • Very low noise (1.1 nV/Hz). • Ultra-low distortion (<0.000015%). • Excellent bandwidth (40 MHz GBW). • Widely used in high-end audio. Texas Instruments OPA2134 • Very popular in Hi-Fi audio. • More economical and stable. • Slightly higher noise (8 nV/Hz) but sufficient for MM. • Smooth sound, widely used in DIY and commercial equipment It is necessary to make a very clean split type power supply, it is recommended to use quality three-terminal regulators type 78M15 and 79M15 and be careful to have good filtering.

published 8 months ago