Wednesday, February 1, 2012

Aiwa A22 Micro Component Stereo Amplifier

IMG_7497 - Version 2

Proving that good (read: great) things come in small packages, here's the Aiwa A22 Amplifier. A little beauty at a very cool maximum output of 36wpc. I picked this one up at a local flea market with a matching tuner and cassette deck for $10. Sadly the particleboard rack that they came in was beyond saving. The tuner just needed some TLC however the cassette deck was long gone with signs of corrosion, deteriorated belts and the unsettling feeling that some minor has tried to press every control button down at once.






This little amp was not without it's issues as well. Mainly we were looking at some corrosion from the top case which had come into the unit leaving it's telltale signs on the bottom casing and the transformer. To really clean this up, the whole unit would have to be disassembled, sanded, sprayed and then put back together.






Corrosion even got to the bottom of the PCB which was easily cleaned off:


Apart from that, it needed the usual cleaning of potentiometers, full capacitor replacement, polishing of the faceplate and one not-so normal modification, changing of the speaker outputs.

Old filter capacitors:

Nicely recapped board:


There is only outputs for one set of speakers, however these were the old DIN style rarely used now so these were changed over to binding posts.

Din Sockets removed:


New binding posts installed:


Back in in the amp:


With a bit more of a clean up, new cable ties and re-routing the wiring so it's a bit cleaner, we have a beautiful little amp it's sound is surprisingly bright, almost a bit too bright for me but the customer who purchased it was over the moon and in the end, that's what counts.



On the bench having it's headphone test run:


Paired up with it's matching R22 stereo tuner:


Enjoy some more modelling shots!











9 comments:

  1. stumbled across your blog while searching for recommendations for minimalist receivers/amps/preamps, excellent stuff here, thanks for sharing!

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  2. Thanks for looking! Be sure to keep an eye out as I'm always adding new equipment to this blog! I have a few more Mini Component AIWA systems i'll be adding in the future.

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    Replies
    1. I will send you some pictures of my tiny AIWA c22 system bought in 1982 Hamilton Ontario.

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  3. Hi Bonsaichop !

    I have virtually the same system !
    My set was a year earlier than yours and contained separate
    preamp and amp units.
    The tape deck requires a new motor but as I no longer play cassettes that is no sacrifice to me.

    Wonderful little system has served me now for over 30 years and still going strong.

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  4. I have a amplifier AA-1010; a cassette deck CS 705D, and a turntable AP-001C..

    anyone interested in buying them as a whole?

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  5. I have the AIWA Mini Compo A22 amp & R22 tuner with DIN connectors. Both units are exactly like those in the photo above. Anyone who can recommend a decent pair of speakers to use with this setup?

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  6. Hey Anon, I know it's a year old thread, but I just bought one of these, with some Lafeyette Criterion 50A speakers and a new turntable. The 50A's sound pretty badass with the A22 for vinyl. Wamr and really good output/headroom. They sound massive in my apartment. I don't know much about vintage stereo equipment, but I know when things sound good.

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  7. Hi Bonsaichop

    Impressive work. I am trying to revive my 22 system but I cannot fire it up as I have power leads to the A22 and MT22 with no plugs. How can I determine which of the two wires is positive?

    Thanks very much.

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  8. Those small sized half-width components are so perfect. I wish the modern hi-fi companies would come out with more pieces of that size. Rega and Naim looked like they might have been going in that direction with the Brio-R and the Unitiqute.

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