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Original Message
RE: Year small signal transistors became high quality
Posted by sony6060 on May 24, 2021 at 04:39:56:
First silicon transistors were not great and some become noisy even from 1970 as documented on the internet. The Pioneer SX-1000TW was noted for noisy transistors after guessing 5000 hours use. I am sure late 1970s solved this issue with better transistors, may be around 1974 though.