After building a little amplifier using the LM386 chip I had a store bought version come in the post from China. I must stop drinking and browsing Ebay for electronic kits as I can never remember what I bought and even if I went on Ebay. Maybe Ebay should fit my account with a breathalyser and test me before allowing me to ‘Buy it Now’. Anyway I built the kit and listened using the same speaker and found it tinny compared with the one I built. Also the variable resister on the kit was the wrong way around which I noticed on a couple of video’s they had the same wrong way round pot. Turn left the volume went up and turn right the volume went down?? Maybe they all used the same layout.
I wanted to do a comparison for a couple of reasons. One was to see if I could, and the other was to use my scope and FFT functions and signal generator. Everything is the experiment and so for me the satisfaction of making this work is awesome.
Here is my amateur comparison.