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Features:

• Polk Audio PAD4000.4 4-Channel 800 Watt RMS Car Audio Amplifier Amp PA D4000.4
• Super-Eefficient Class D Design—Runs much cooler than conventional amps.
• High-Speed MOSFET—Switching power supply.
• Toroidal Transformers—Help keep the amplifier’s sleek design under 2" tall while ensuring plenty of clean, efficient power.
• Protection—Thermal, DC offset, reverse DC voltage and short circuit protection.
• Nickel-Plated Wire Terminals & RCA Connectors— Ensure maximum signal transfer.
• Front & Rear Level Controls—Adjust the gain of the front and rear channels to match the output voltage from your head unit.
• Low-Pass & High-Pass Frequency Controls— Enables you to adjust crossover overlap for better blending of speakers.
• Front & Rear BPF, FULL, HPF Switches— Selects full range, high pass filter, or bandpass filter to dial in your speaker blending.
• Channel Mode Switch (ST/4Ch)—In the Stereo position, the amplifier will send the same signal to front and rear channels.
• Stainless Steel Hardware—Used throughout won’t corrode in humid environments.

Specifications:

• Type: Bridgeable Class D MOSFET
• Channels: 4 channel
• RMS Continuous Power @ 4 Ohms: 125 W x 4
• RMS Continuous Power @ 2 Ohms: 200 W x 4
• Power Bridged @ 4 Ohms: 400 W x 2
• Distortion at Rated Power: <0.1%
• Minimum Impedance Bridged: 4 Ohms
• Minimum Impedance Not Bridged: 2 Ohms
• Signal-to-noise Ratio: 105 dB
• Frequency Response: 20 Hz-20 kHz
• Damping Factor: >100
• Crossover Filter Slope: 12 dB/octave
• Filter Switch (Front): 3-position (HPF, Full, BPF)
• High Pass Filter Frequency Range (Front): 20 Hz - 4 kHz
• Low Pass Filter Frequency Range (Front): 50 Hz - 5 kHz
• Front Gain Control: 200 mV - 6 V
• Filter Switch (Rear): 3-position (HPF, Full, BPF)
• High Pass Filter Frequency Range (Rear): 20 Hz - 4 kHz
• Low Pass Filter Frequency Range (Rear): 50 Hz - 5 kHz
• Rear Gain Control: 200 mV - 6 V
• Line Level Inputs
• LED Power Indicator
• LED Protection Indicator
• Supply Voltage: 10 V - 16 V
• Fusing & Power/Type: (1) 40A (1) 35A ATC
• Power Connections: 4 AWG
• Ground Connections: 4 AWG
• Speaker Connections: 12 AWG
• Height: 1 13/16" (46 mm)
• Depth: 6 3/4" (171.5 mm)
• Width: 10 15/16" (277.8 mm)
• Width w/ Terminal Adaptor: 11 11/16" (296.9 mm)
• Weight: 5 lbs (2.7 kg)

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• Best prices - We sell all Polk Audio Products at great prices
  
• Full Factory Warranty
  
• Lifetime Customer Service by Polk Audio product experts
  
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Please note: If you purchase Polk Audio from an unauthorized seller then you are taking a big risk. You will not have any manufacturers warranty, and there is no guarantee that the item is authentic, brand new, or even working.