hifi engine

Manual Library / Nikko

Nikko Alpha II

Stereo Power Amplifier

add a review (1 review)

Nikko Alpha II


Power output: 120 watts per channel into 8Ω (stereo)

Frequency response: 10Hz to 100kHz

Total harmonic distortion: 0.03%

Damping factor: 80

Input sensitivity: 1V

Signal to noise ratio: 105dB


service manual  English

If you have any problems opening files please read the download FAQ. All files are provided under strict licence and reproduction without prior permission or for financial gain is strictly prohibited.

If you have additional documentation please consider donating a copy to our free archive.


 Login or register to post reviews

Reviewed Oct 03rd, 2014 by ivandezande

Picked this up broken and repaired it. Easy job to fix, very modular and everything is robust. Large dual transformers, 20,000uF a channel, and huge heatsinks on the back.
I give this a 8 because it sounds amazing and is durable, but it has some thermal issues with the vbe multiplier, and the driver transistors are not very high quality. The VU meters are beautiful. Wonderful amp to have.



This website is not affiliated with or sponsored by Nikko. To purchase Alpha II spares or accessories, please contact the company via their website or visit an authorised retailer.