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Onkyo A-5

Stereo Integrated Amplifier (1979)

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Onkyo A-5


Power output: 45 watts per channel into 8Ω (stereo)

Frequency response: 15Hz to 40kHz

Total harmonic distortion: 0.08%

Damping factor: 50

Input sensitivity: 2.5mV (MM), 150mV (line)

Signal to noise ratio: 75dB (MM), 90dB (line)

Output: 150mV (line)

Speaker load impedance: 4Ω to 16Ω

Dimensions: 444 x 159 x 380mm

Weight: 12.2kg


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edgelgil's picture

re: A-5

New guy here, glad to have found this site, thanks for having me. I have an older Onkyo A-5 amplifier that my brother blew up somehow. I had seen complete sectional boards listed in the materials draft. Just asking if anyone knows to where do we go for parts? I was looking at the Onkyo USA site, entered this unit, came up empty. Stuck until I find the whole board, or gather the parts to replace.
Open for constructive and helpful paths to follow.


re: A-5

Hi, I know it's been months since you posted about your A-5 amplifier. I was curious if you've found any boards for it or have been able to get it fixed. I recently acquired an A-5 Onkyo amp and was very impressed with it's performance. They are definitely well-built amplifiers and sound sweet!

Finding replacement boards can be difficult with probably the best source being that big auction site, of course being careful to buy from a reputable seller. A better option would be to repair the board(s) yourself if you have a little electronic knowledge or experience, or find someone to repair it for you. Do you have any idea what "blew up"? I suspect the output transistors may have blown, and that can sometimes cause other components to fry as well.

re: A-5

Hi Maximo,

I don't understand why you need the complete board. Even though the manufacturer provided a part number for the board, they were often expensive, available for a limited time or only available to authorized service centers.

You might be able to find one on ebay, as sellers sometimes part out machines that aren't worth repairing for one reason or the other.

If your board is in good physical shape, i.e. no cracks, holes or burnt sections, it can be repaired using modern parts. Reply back here with any parts you are unable to locate and we will try to help.


This website is not affiliated with or sponsored by Onkyo. To purchase A-5 spares or accessories, please contact the company via their website or visit an authorised retailer.