The SA20 is a twelve string full hollow body guitar. To compensate for the larger headstock and the twelve tuners, the guitar is nicely balanced by a suitably shaped piece of metal mounted on the inside of the tailpiece end of the body. Yamaha has done the same for the SA70 bass guitar. I’ll try to take a picture of it one day…
Click on the pictures to see a larger image.
Japanese brochures – translation welcome!
Page from Yamaha Guitar Database Legacy:
Page from brochure for the USA market (1968) :
Yamaha SA-20 Guitar Owner’s Manual:
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