@northa40 Funny how reading your posts is almost exactly like reading my own LM3886 beginnings. Including the high supply voltage and hum issues. I started out with some of those cheap Chinese "Xy LM3886" boards from eBay. Those are sold in pairs of two complete PCB's for less than the price of a single real LM3886 chip 😉
Should you be interested, my journey up to that point is documented in this thread (or skip the wall of text and check out the pictures): https://www.diyaudio.com/community/threads/neurochrome-lm3886dr-build.295665/post-6517214
Should you be interested, my journey up to that point is documented in this thread (or skip the wall of text and check out the pictures): https://www.diyaudio.com/community/threads/neurochrome-lm3886dr-build.295665/post-6517214
I bought one of those XY kits to see what they were about: https://www.diyaudio.com/community/threads/xy-lm3886-kit-review-measurements.294032/
The ICs I received were confirmed fake by TI.
Tom
The ICs I received were confirmed fake by TI.
Tom
Now in Rev. 1.2 with even better performance: https://neurochrome.com/products/lm3886-done-right
Tom
Tom