Audio-Technica recently started shipping their new ATH-ANC3 QuietPoint in-ear active noise cancelling headphones. The basic principle is the same as in all other products of this kind, as they state: ìElectronics in the control box create a noise-cancelling wave that is 180° out of phase with the ambient noise. This wave acts like a noise eraser: it cancels out the annoying sounds that surround yo
