Kenwood Mono Amplifier: You can add a dose of potent power to your system, thanks to the special design of the Kenwood KAC-X1D amplifier. Its dual power supplies and efficient Class D design let this amp deliver massive amounts of power to your subwoofer from a compact chassis that'll fit in more places than traditional amps can.

The built-in low-pass filter lets you tailor the amp's output so you can dial in just the right bass for your vehicle, while optimizing the subwoofer's performance. A built-in infrasonic filter keeps your sub from wasting energy trying to play frequencies that you can't hear. Kenwood's Dual Sigma Drive extends the amp's control over cone movement for tighter, punchier bass. And the onboard fan and dual vents help keep this amp cool as it pumps out impressive power.

Kenwood KAC-X1D Key Features:

• 1600W maximum output power
• Built-in variable low-pass filter
• Built-in variable infrasonic filter
• Bass Boost control by remote
• 2 ohms load capability
• Dual Sigma Drive
• Dual power supply
• Power MOS-FET switching power supply
• Wired remote included

Amplifier Features:

• Class D Amplifier 
• Full Range Digital Amplifier 
• Load Capability 2Ω Stable
• Maximum Output Power 1600W
• Rated Power Output 600W x 1 (4Ω)
• Rated Power Output 700W x 1 (2Ω)
• CEA-2006 Compliant 
• Low-pass Filter 
• Bass Boost Circuit , by wired remote control
• Infrasonic filter 
• Dual Sigma Drive 
• Dual Power Supply 
• Cooling Fan 
• Power Indicator Multifunctional
• Blue Illumination 
• Protection function 
• Line in 1 RCA (Gold Plated)
• Input Selector no
• Line out 1 RCA (Gold Plated)
• Single Side Terminals 
• Full Contact Terminal 
• Gold Plated Power & Speaker Terminals 
• Chassis Aluminum Die-cast 
• Removable Coverplate 
• DC cable Supplied No

Amplifier-Specifications:

• Maximum Power Output (4?) 1600W x 1
• Rated Power Output (4Ω, 14,4V) 600W x 1 (20Hz ~ 200Hz, 1%THD)
• Rated Power Output (2Ω, 14,4V) 700W x 1 (100Hz, 1%THD)
• Rated Power Output (CEA-2006) 600Watts RMS x 1 at 4 ohms and 1% THD
• Low-pass Filter 50~200Hz (24dB/oct)
• Bass Boost Circuit 0~18dB (Variable) 
• Bass Boost Frequency 40Hz ~ 100Hz (Variable)
• Infrasonic filter 15~40Hz (24dB/oct)
• Input Sensitivity 0.2 ~ 5V
• Input Impedance 10k?
• Signal to Noise Ratio 105dB
• Signal To Noise Ratio (CEA-2006) 73dBa (Reference: 1 Watt into 4 Ohms)
• Frequency response (+0dB, -3dB) 20Hz ~ 200Hz
• Operating voltage 14.4V (11V ? 16V allowable)
• Maximum current consumption 60A
• Dimensions (WxHxD) 235 x 52 x 192(mm),
• Weight 2.9kg