Picasso Nano Series 4-Channel Class D Car Amplifier</br>RMS Power Rating: 4 ohms: 140 watts x 4 chan. / 2 ohms: 250 watts x 4 chan.</br>Max power output: 500 watts</br>3-way protection circuitry (thermal?? overload?? and speaker short protection)</br>Pulse Width Modulated MOSFET power supply</br></br>Product Description</br></br>Picasso Nano Series 4-Channel Class D Car Amplifier. High-pass/low-pass filter: 80 Hz?? 24 dB/octave. Input sensitivity: 200mV - 6V.</br><br/>http://www.amazon.com/gp/product/B00VH40878