Premium Vibrational Speaker

great volume, and can actually feel it vibrating on my chest (turned up, and wearing hearing protection to let sound penetrate through body)

The speaker volume does not go very low. At a certain point when I am lowering the volume, it just cuts out completely. So I have to listen to the vibrational hum at a volume that is louder than I prefer. The same thing happens with the earbuds that came with the product.

a good speaker for general music but when it comes to reproducing pure sinewaves a class A amp would be more suited than a class D (switching artifacts). efficiency is less important than Signal vs noise in this use case