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AmplifiersPower AmplifiersDiscontinued
Estimated price (community-sourced)
$2,500
Around — community and catalog average, updates slowly
About the TA-N77ES
The Sony TA-N77ES is a stereo power amplifier from Sony’s ES line, manufactured from 1987 to 1989. It uses a discrete, pure-complementary SEPP output stage and Sony’s Spontaneous Twin Drive design. Rated continuous output with both channels driven is 200 W per channel into 8 ohms, 230 W into 6 ohms, and 270 W into 4 ohms. It also supports bridged mono operation and has a 1 V line-level input.
Specifications
Type: Stereo power amplifier
Continuous output (both channels driven): 200 W/channel at 8 Ω; 230 W/channel at 6 Ω; 270 W/channel at 4 Ω (20 Hz–20 kHz)
Dynamic power: 300 W at 8 Ω; 370 W at 6 Ω; 520 W at 4 Ω; 800 W at 2 Ω; 660 W at 1 Ω
Frequency response: 1 Hz–200 kHz (+0/−3 dB)
Total harmonic distortion: 0.004% at rated 8 Ω output; 0.005% at 6 Ω; 0.006% at 4 Ω
Damping factor: 100 (8 Ω, 1 kHz)
Input sensitivity/impedance: 1 V / 30 kΩ
Signal-to-noise ratio: 120 dB (A-weighted)
Dimensions (W × H × D): 470 × 185 × 440 mm
Weight: 25 kg