Kenwood KAC-9103D single channel power amplfier key features

• 1,800 Watts max power
• 500 Watts x 1 max (4 ohms) RMS
• Aluminium die-cast heat sink
• Built-in variable low-pass filter 50 - 200Hz (24dB/oct) 
• Built-in infrasonic filter 15 / 25Hz (18dB/oct)
• RCA line output terminals for adding additional amplifiers
• Power MOSFET switching power supply
• Blue illumination
• Incorporates cooling fan
• D class amplification circuits throughout, using switching techniques instead of the linear methods used in Class A or B type amplifiers. Class D is a significantly more efficient than Class A or B, resulting in greater power with less heat generation, higher stability and improved reliability
• Complete with full fitting and operating guide