Sony 4 channel class ab high resolution mosfet car audio stereo amplifier

4-channel car audio amplifier with high-resolution audio compatibility for exciting sound max power of 350w x2 at 4 ohms btl, 175w x4 at 2 ohms, and 150w x4 at 4 ohms features rms rated power output of 70 watts x4 premium components and low/high pass filters provide premium sound quality channel configuration: 4-channel/3-channel/2-channel frequency response: 10 to 100 khz high-pass filter: 50 to 300 hz (variable) high-pass filter slope: 12 db/oct low-pass filter: 50 to 300 hz (variable) low-pass filter slope: 12 db/oct bass boost: frequency (0 to 10 db): 40 hz, 0 to 10 db cea power output: 70 watts x 4 cea sn ratio: 93 dba current drain (a) - rated output power at 4 ohm: 33 amps line in: input sensitivity: 0.3 to 6 signal to noise ratio: 100 db tolerance: +0.5/-3 db total harmonic distortion at 1 khz (percent): 0.05 percent color: black dimensions (l x w x h): 10.75 x 8 x 2 inches weight: 5.50 pounds