High Efficiency Class D Full Range Amplifiers</br>Hybrid Aluminum Alloy Heat sink for Optimum Dissipation</br>2-ohm Stereo & 4-ohm Bridged Full Range Operation</br>Built-in Bluetooth V3.0 for Wireless Mobile Device Playback</br>MOSFET Power Supply w/ Audiophile Grade IRTM Transistors</br></br>Product Description</br></br>High Efficiency Class D Full Range Amplifiers.  Military Grade SMT PCB Maintains Dynamic Performance.  Direct Short, Thermal, & Overload Circuits Protect Ampllifier.  200mV-12V High Level or Low Level RCA Input.  Variable 12dB High Pass, Low Pass, & Subsonic Crossovers.</br><br/>http://www.amazon.com/gp/product/B01B9KH1S8