Alpine KTP-445U 180W RMS Power Pack Series Compact Class D 4-Channel Car Amplifier

Features:

• Alpine Universal Power Pack 4-Channel Class D for All In-Dash Receivers
• The fast and easy solution to higher power aftermarket sound
• RMS Power Rating:
• 4 ohms: 45 watts x 4 chan.
• 2 ohms: 45 watts x 4 chan.
• 4 ohms: 90 watts x 2 chan. (Bridged)
• Total RMS power output: 180 watts
• CEA-2006 compliant amplifier
• Increases the output of any head unit without having to install a full-size amplifier and amp install kit
• The Independent Front/Rear gain switch is adjustable from high to low
• It runs off the receiver's power circuit
• High-Pass Filter: selectable 60/80/120 Hz @ 12 dB/octave
• Fast and simple installation
• 4-channel operation for four speakers
• The minimum impedance of 2 ohms
• Is not compatible with factory amplifiers
• CEA-2006 compliant amplifier
• Frequency response: 20-20,000 Hz
• Fuse Rating: 15A x 1
• Dimensions: 7-13/16 Inch D x 2-9/16 Inch W x 1-1/2 Inch H

Specifications:

Power Specifications - Full Range Channels:

• RMS Power @ 4 ohms: 45 watts x 4 channels
• RMS Power @ 2 ohms: 45 watts x 4 channels
• Bridged RMS Power: 90 watts x 2 channels

Amplifier Specifications:

• Amplifier Class: D
• Number of Channels: 4
• Total RMS Power Output: 180 watts
• Maximum Input Gauge Size: Wire Harness
• Minimum Impedance Unbridged: 2 ohms
• Minimum Impedance Bridged: 4 ohms
• THD at Rated RMS Power: 1%
• Speaker Level Inputs: Yes
• Preamp Outputs: No
• Built-in Crossover: None
• Signal-to-Noise Ratio: 81 dB
• Bass/Gain Remote: No
• Fan Cooled: No
• Fuse Rating: 15A x 1 
• CEA-2006 Compliant: Yes