It does a great job of noise isolation. Noticeable reduction when manually handling Zoom recorder with a connected grip. However, the cold shoe mount is a major disappointment in two ways: 1) it does not fit the Canon t7i hot shoe...the mount flanges are too thick and the center is too wide, 2) the mount is plastic. Movo, can you do something to help? The main reason I bought this was to mount my Zoom on my DSLR, and I can't do it.