Regarding the internal speaker, You can order a Music Tech with an internal speaker. I spoke to Claudio, and he says that this would be no problem. I have had a Music tech for a few years, and love it. Light, and the accordion sounds are pretty good to excellent. I didn’t know that a built in speaker was an available option when I purchased it, so had to get used to no sound coming from the accordion, but combining this accordion with a good arranger makes a really impressive combination.