Description:1. Digital pulse-width-modulated regulated power supply.2. Mosfet power supply devices.3. Fully complementary discrete audio stages.4. Direct coupled output stage.5. Discrete output transistors.6. Low overall negative feedback.7. 2 ohm stable in stereo mode.8. Bridgeable to mono operation.9. Stereo/mono setup simultaneously.10. 4 way protection circuit-thermal, current, D.C. Moffset and over-voltage.11. Soft start delayed turn-on.12. Increase surface area and mass for continuous heat dissipation.13. LED power on indicator.14. Compatible used for subwoofer.Feature:Amplifier TypeAB TypeBridged Power200w/4CHRMS Power80wMaximum Power2000wFrequency Response10Hz ~ 40KHz1dBTHD 0.1%Bass Boost12dBSpeaker Impedance2 ~ 16Input Sensitivity200mvS/N Ratio 85dBInstallation Dimension330*220*58mmPackage included:1 X 12V Car Amplifier4 X Screws Set1 X English User Manual