Isn't that kind of a duh? It costs money to use a quiet brushless motor My Craftsman16 gallon that is nearly 20 years old is noisy as can be. I replaced the bearings once. It actually uses sealed roller bearings. My little Dirt Devil with a 6 inch beater bar is loud as can be. It has a brush type motor spinning some fast speed. If it had a universal brushless motor it would be much quieter. They can also knock down the noise by using more solid materials that have some mass, using foam like they do in the modern diesel cars and tractors and other acoustic tricks. That would take a little more money that joe blow tight wad wants to spend. Joe blow not such a tightwad buys a Fein.
I bet the Sh>For as long as these Shop Vacs have been around, I would have thought that