BTW, a particularly clever friend, who happened to be an adept with electronic matters, developed a small supportive amplifier by mounting a twelve inch speaker inside a five gallon plastic bucket. The circuit board he used was gleaned from another amplifier. One of those mini amps that are 9 volt battery operated and measure about 6"x6". They're sold as a samll practice amp but are almost a novelty. They are very inexpensive. He looked at the components used in the circuitry and realized that they could produce more output. So he threw away the small outer housing that it came with and then mounted the guts inside the bucket with the knob(s) and input sticking out the side. He ran the thing with a small motorcycle type 12 volt lead acid battery which had no trouble operating the unit and could easily be recharged. It sounded great and gave his guitar just enough presence to enable him to hear on the noisy street. It also had the added advantage of being disguised as a simple five gallon pail or bucket to carry his essentials.

Some people have all the smarts.