Wheatstone 21 vs 22 this time.. in General Concertina Discussion Posted July 6 I have a friend who has a Model 22. It is a little louder than my metal ended Edeophone and she tells me her 22 is louder than a mutual friend's metal ended Aeola. I don't know if all 22's are loud though. Greg could advise on that. Loudness of course isn't the only quality that's important to the sound of the instrument though. Playing them would be an important way to decide. Maybe Greg could play the same tune on both and send you the recordings if you can't visit his shop. When I was at NESI last year I had a chance to try some instruments that Greg set up. They were all very responsive.