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About the Alpha II
The Nikko Alpha II is a stereo power amplifier manufactured in Japan between 1977 and 1980. It delivers 120 watts per channel into 8 ohms with a frequency response from 10 Hz to 100 kHz and total harmonic distortion of 0.03%. It features illuminated VU meters with adjustable power levels, dual power supplies for stabilized operation, electronic overload protection, and switchable output power. The amplifier is known for its robust build quality, weighing approximately 19 kg, and dimensions of 483 x 137 x 330 mm. It has a damping factor of 80, input sensitivity of 1V, and a signal-to-noise ratio of 105 dB. The Alpha II is considered a top-class vintage amplifier capable of driving difficult speaker loads and is often paired with the Nikko Beta II preamplifier and EQ-I equalizer for a complete system. It is noted for its analytical sound character and durability, with a classic black or silver finish and no remote control.
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