AK45 Home Audio Power Amplifier Fully updated design, 40W+40W rated power, 2.0ch, perfect match for 4-8 inch 4-16 passive speakers. Function upgrade, with Treble and Bass key, adding Mic Jack and Mic VOL key. Besides, as a digital amplifier receiver, the sound quality is more perfect than ordinary analog amplifiers, With built-in power transfer board which support AC 110-240V power input and DC 12V/5A power input, ready to use. HiFi Stereo Amplifier 2.0 channel digital amplifier can provides 400Wx2 P.M.P.O(Peak Music Power Output), with powerful audio processing chip, distortion Rate: 0.5%, signal-to-noise ratio: 85db, strong anti-interference ability, shielding power inductance, low noise amplifier,HiFi stereo sound effects, you can experience the effect of immersive.