The Sony TA-N 77 ES is a stereo power amplifier that was manufactured between 1987 and 1989 in Japan. It features a sleek black design and has remote control capabilities suitable for optimizing convenience in use. The amplifier consumes 510 watts of power and has dimensions of 470 mm in width, 185 mm in height, and 440 mm in depth, weighing 25 kg. It originally retailed for approximately 2,500 DM. The TA-N 77 ES supports multiple input types, specifically line-in fixed and line-in variable configurations, and can connect to two pairs of speakers. It offers impressive continuous power output, delivering 2x 200W at 8 Ohms, 2x 230W at 6 Ohms, and 2x 270W at 4 Ohms, with low total harmonic distortion ratings of 0.004% at a power level of 10W and 4 Ohms. The amplifier can also operate in BTL Mono mode, offering a substantial 1x 580W at 8 Ohms. Additional technical specifications include a frequency response of 1Hz to 200kHz (+0/-3dB) and a signal-to-noise ratio of 120dB. The TA-N 77 ES is equipped with two large VU meters for visual monitoring of output levels. It forms part of a series that includes other power amplifiers such as the Sony TA-N 55 ES and TA-N 80 ES, and pairs with preamplifiers like the Sony TA-E 77 ES and TA-E 77 ESD.
