KAC-6104D main features:

• 600 Watts max power
• 200 Watts x 1 RMS  (4 ohms)  
• 300 Watts x 1 RMS (2 ohms)  
• Aluminium die-cast heat sink
• Built-in variable low-pass filter 50 - 200Hz (12dB/oct)  
• 2 ohm load capability
• 94dB S/N ratio
• Accepts line level or speaker level inputs
• Power MOSFET switching power supply
• Frequency response 20Hz - 200kHz
• Input sensitivity 0.2 - 5.0 V
• '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
• Overall dimensions 198 x 230 x 59 (mm)
• Complete with full fitting and operating guide