This very interesting article by Ben Duncan appeared in the October 1993 issue of Electronics World + Wireless World magazine in the UK. In it, the author tests ten popular power amplifier chips and explains, amongst other things, how the distortion spectra are important in terms of sound quality. Unfortunately, the article does not appear to be available anywhere else. I made these copies of the article before emigrating as part of our big clear out.
The article is nearly twenty years old as I upload it, so of course there are different chips available now. However, I think it's still an interesting read. The same issues still apply.
Distortion spectra are shown for the LM380, LM383, LM386, LM1875, TBA820M, TDA1514, TDA2030, TDA2040, TDA2611 and TDA2822M.
If Ben prefers that I don't make this article available, please let me know and I'll remove it.
I've more hifi component reviews on my hifi page.
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