Whats the best way to amplify a Chemnitzer?
If your instrument has an internal microphone in the bellows, it was put there just for this reason. Plug it into your amplifier of choice and go. Bass amplifiers tend to work well, since the tone of the internal microphone is often very tinny. I have also seen the miniature gooseneck microphones used for amplification, but you should make sure the concertina signal doesn’t go into the monitors, otherwise you’ll have feedback problems.