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OMGCat!
Super Member
Well, after looking in probably the same places you did, I can't find a thing either. Usually those off models came in a system and can be hard to pin down.
Does it use STK modules or discreet transistors for the outputs? It looks somewhat like the A-400 or A-500 with the spring terminals and silver painted sheet metal on the back but that's not exactly helpful.
Does it use STK modules or discreet transistors for the outputs? It looks somewhat like the A-400 or A-500 with the spring terminals and silver painted sheet metal on the back but that's not exactly helpful.
Did you test @Binkman s "hunch" that it was a rebranded A-720? Download the service manual and check board id's etc...
https://audiokarma.org/forums/index.php?threads/yamaha-a-27-stereo-amp.503471/
https://audiokarma.org/forums/index.php?threads/yamaha-a-27-stereo-amp.503471/
Binkman
Lunatic Member
@mbzI did find a pay-for A-27 service manual which was mf'd in 85' and covers all international models.
Probably very close in specs to the A-720 mf'd same year.
You will also see the A25 (much asked for manual as well)
https://www.stereomanuals.com/man/rep/yamaha/index.htm
I have purchased from them and many others on AK. you'll get a quality reprint. pdf payfor files are avail. via email contact and how to ask for one.
https://www.stereomanuals.com/about/contact.htm---------
Rick Stouts 'No Description' info page. Good read and you'll get a chuckle or two.
https://www.stereomanuals.com/man/rep/no-description-or-price-items-short.htm
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