I'll buy them.
Well one of my aim here was to build a proper preamp and then a proper amplifier. I tend to normally stop at the preamp since that's what I get help with I guess buying Chinese amps is what I'll have to use for my projects for now.
When Radio Shack carried the LM383 IC, it appeared so easy to use that it was irresistible. Only five terminals. 8W (16W if you bridge two of them). I built a simple PA system with one. I put two in a stereo amp for driving desktop speakers. Minimum fuss. Minimum added components. Although it is not as powerful as you want, it could make a handy reliable building block to test with music sources, pre-amps, volume controls, equalizers, etc.
Also another thing, I am going to be honest and might be blunt.
Bottom line, if you think you can build an amp like how you post in this thread, it's not going to happen.
Sorry.
You might need to buy many Mosfets to match three pairs of them.
The circuit is missing short-circuit and thermal overload protection so a failure will be a spectacular show.
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