The Onkyo CR 325 incorporates Wide Range Amplifier Technology or WRAT, which gives this device a wider frequency response range, reduced distortion, and more refined control over current and kickback. Through this technology, the Onkyo CR receiver delivers clear, powerful sound. This 2.1-channel receiver has an audio dynamic range of 95 dB, and it functions with two-way, bass reflex speakers. The maximum input power of this Onkyo CR receiver is 70 watts, and with a minimum frequency response of 50 Hz, it has a maximum frequency response of 100 kHz. The aero acoustic drive on this Onkyo CR receiver manages the interference between the low and high frequencies, along with the ring-drive tweeter, which helps restrain low frequencies from interfering with high ones. This 2.1-channel receiver has a height of 4.6 inches, a width of 8 inches, and a depth of 14.4 inches, with a total weight of 8.8 lbs. The Onkyo CR 325 can be used to bring higher quality sound to the user's MP3 files.