NIKKO NA-690
![NIKKO NA-690](https://www.wasteaudio.com/wp-content/uploads/2020/02/nikko-na690-1.jpg)
Specifications
Power output: 45 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 30kHz
Total harmonic distortion: 0.04%
Damping factor: 45
Input sensitivity: 2.3mV (MM), 140mV (line)
Signal to noise ratio: 80dB (MM), 90dB (line)
Output: 140mV (line)
Dimensions: 420 x 138 x 335mm
Weight: 11kg
Year: 1979