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1.
Build Your Own Professional-Grade Audio Amp on the Sort-Of Cheap (ieee.org)
444 points by chablent on Oct 31, 2018 | 256 comments
2.
Ask HN: How to self-learn electronics?
1681 points by sidyapa on April 6, 2018 | 302 comments
3.
Tell HN: New features and a moderator
2381 points by dang on July 11, 2016 | 451 comments

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