Power output: 120 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 50kHz
Total harmonic distortion: 0.005%
Damping factor: 45
Input sensitivity: 0.5mV (MC), 2mV (MM), 120mV (line)
Signal to noise ratio: 71dB (MC), 82dB (MM), 100dB (line)
Output: 120mV (line), 1V (Pre out)
Dimensions: 461 x 360 x 170mm
Weight: 21kg

It can be switched between Class A and Class B depending on power requirements (2x30W Class A, 2x120W Class B, at 8Ω). Power supply: 100, 110, 120, 220, and 240V AC. 

The amplifier is equipped with all the necessary features, such as a selective frequency response for tone control, classic filters, and extremely precise power meters. 

The amplifier is from my father's hi-fi collection (the first owner, a non-smoker). 

The device is not only a wonderful collector's item but also a fantastic piece of audio history. 

According to my father, the device is in absolutely excellent condition – very clean inside and out. 

All components are original and have never been repaired (factory-fresh condition!). 

This unit has been used very carefully and occasionally, representing a masterpiece of the Yamaha Natural Sound series. 

Since the amplifier has not been used for 25 years, it will likely require a service and a tune-up, which has never been necessary before. 

I am offering this amplifier as a non-functional unit for vintage audio enthusiasts, for repair or parts. 

The unit comes with the original printed manual and sales brochure. 

The item is sold "as is." Private sale with no warranty and no returns. The buyer agrees to this and confirms this with their purchase! The unit will be securely packaged with due care. Shipping will be insured.