Vintage Proton (NAD) Model 520 Stereo Amplifier with Phono Input 1986
Very good looking amplifier Great condition. A few minor scuffs on the top. Power input needs minor repair to break in outer insulation. Fully working The phono input has adjustments for matching cartridges. 4 line level inputs Pre-amp and power amp are split and jumpers allow separate use or insertion of equaliser. A and B speaker outputs Specifications: Power output: 20 watts per channel into 8Ω (stereo) Frequency response: 20Hz to 20kHz Total harmonic distortion: 0.015% Damping factor: 9