Give your car stereo system a power boost with this Alpine Power Pack KTP-445U 180W Class D bridgeable 4-channel amplifier that features a 12dB/Oct high-pass filter for powerful sound.
Geek Squad installation
is strongly recommended for this product. Please visit for details.
Handles up to 45W RMS (continuous) @ 4 ohms or 2 ohms
For powerful sound. Up to 90W continuous bridged.
12dB/Oct high-pass filter
Along with variable gain ensures flexible operation.
4 ohms bridged impedance
Conducts power evenly to keep the speaker at an appropriate level.
RCA and auto sensing speaker-level connectors
Enable simple installation.
Specifications
Key Specs
- Color: Black
- Continuous Watts x Channel @ Ohms: 45W x 4 x 2
- Maximum Watts x Channel @ Ohms: 45W x 4 x 4
- Amplifier Class: D
- Number Of Channels: 4
- Bass Boost: None
- Bridgeable: Yes
- Low-Pass Crossover: None
- High-Pass Crossover: Variable
- Speaker-Level Inputs: Yes
General
- Brand: Alpine
- Model Number: KTP-445U
- Product Name: Power Pack 180W Class D Bridgeable Multichannel Amplifier with High-Pass Filter
- Mounting Hardware Included: Yes
Audio Power
- Watts Per Channel Maximum: 45 watts
Audio
- Minimum Frequency Response: 20 hertz
- Maximum Frequency Response: 20 kilohertz
- Total Harmonic Distortion: 0.01 percent
- Signal-to-Noise Ratio (SNR): 80 decibels
Features
- MOSFET Power Supply: Yes
- Bluetooth Enabled: No
- Remote Control Included: No
- Marine: No
- Fan Cooled: No
Input
- Line-Level Inputs: Yes
Output
- Preamp Outputs: No
Dimensions
- Product Height: 1.5 inches
- Product Width: 2.63 inches
- Product Depth: 1.5 inches
- Product Weight: 3.3 pounds
Warranty
- Warranty – Parts: 1 year
- Warranty – Labor: 1 year
Compatibility
- Voice Assistant Built-in: No
Specifications
- UPC: 793276011916
