Every product from B&C Speakers is 100% quality tested before it is packaged and shipped. We perform a set of measurements on every component to ensure that its frequency response, harmonic distortion, and electrical impedance fall within established tolerance windows. Each cone loudspeaker is additionally tested using a low frequency, high-voltage acoustical sweep to check for vibrations or noises (rub and buzz). Each product is guaranteed and supported with a 3-year limited warranty.