Ever wonder how most car audio shops set the gain on amps? Over the years, I’ve seen some rather “unscientific” methods! We use a device (oscilliscope) that measures the harmonic distortion and set the gains to less than 1% distortion. “It has now been demonstrated that the human ear cannot perceive distortion levels of less than 6–12% on normally complex music.” (Stereo Review Magazine) So why do we set our standards so high? So YOUR system will sound as good as it possibly can! SQ and reliability!