Yamaha HTR-6250BL--photos

The HTR-6250 receiver features Yamaha's Parametric Room Acoustic Optimizer (YPAO) automatic speaker calibration system, that sets speaker and subwoofer volume levels, determines the speaker/subwoofer crossover point, measures the distances from the speakers to the listener, confirms that all of the speaker cables are correctly hooked up, and uses equalization to balance the frequency response of all the speakers.