Kenwood KAC-8405 Key Features:

• 4/3/2 Channel power amplifier
• 720 Watts max Output Power  
• 2ohms Load Capability
• Cooling Fan  
• Built-in variable low-pass filter  
• Built-in variable high-pass filter  
• Bass Boost function

Kenwood KAC-8405 Amplifier Features:

• Load Capability 2ohms Stable
• Maximum Output Power 720W
• Rated Power Output 60W x 4 (4ohms)
• Rated Power Output 90W x 4 (2ohms)
• Bridged Power Output (4ohms) 180W x 2
• CEA-2006 Compliant
• Low-pass Filter 
• High-pass Fliter 
• Bass Boost Circuit 
• Switched Mode Power supply Yes, with Power MOS-FET  
• Cooling Fan 
• Power Indicator 
• Blue Illumination 
• Signal Sensing Turn-on 
• Protection function 
• Line in 2 RCA (Gold Plated)
• Speaker level Input 
• Single Side Terminals 
• Gold Plated Power & Speaker Terminals 
• Die-Cast Aluminium Heat Sink 
• Removable Coverplate 

Kenwood KAC-8405 Amplifier-Specifications:

• Maximum Power Output (4ohms) 180W x 4
• Rated Power Output (4ohms, 14,4V) 60W x 4 (20Hz ~ 20000Hz, 0.08%THD)
• Rated Power Output (2ohms, 14,4V) 90W x 4 (1000Hz, 0.8%THD)
• Bridged Power Output (4ohms, 14,4V) 180W x 2 (1000Hz, 0.8%THD)
• Rated Power Output (CEA-2006) 60Watts RMS x 4 at 4 ohms and 1% THD
• Low-pass Filter 50~200Hz (-12dB/oct)
• High-pass Fliter 50~200Hz (12dB/oct)
• Bass Boost Circuit 0~18dB (Bch only)  
• Bass Boost Frequency 40Hz
• Input Sensitivity 0.2 ~ 5V
• Input Impedance 10kohms
• Signal to Noise Ratio 95dB
• Signal To Noise Ratio (CEA-2006) 80dBa (Reference: 1 Watt into 4 Ohms)
• Frequency response (+0dB, -3dB) 5Hz ~ 50000Hz
• Operating voltage 14.4V (11V - 16V allowable)
• Maximum current consumption 34A
• Dimensions (WxHxD) 280 x 59 x 238(mm),
• Weight 2.8kg