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Alpine KTP-445 Power Pack
Upgrade your Alpine receiver to 45 watts RMS x 4
LOW STOCK
- 2-9/16"W x 1-1/2"H x 7-13/16"D
- compact plug-and-play amplifier for Alpine in-dash receivers
- 45 watts x 4 at 4 ohms
Special Offer
Free Shipping
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Sound Ordnance M-4050
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp inputs and outputs
Special Offer
Free Shipping
$139.99
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Alpine KTP-445U "Power Pack"
Upgrade any car radio to 45 watts RMS X 4
IN STOCK
- runs off same power circuit as receiver
- compact amplifier with universal plug for in-dash receivers
- 45 watts x 4 at 4 ohms
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Kenwood KAC-2404S
4-channel car amplifier 40 watts RMS x 4
IN STOCK
- 130 watts RMS x 2 bridged
- variable low-pass and fixed high-pass filters
- preamp and speaker-level inputs
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Kicker 11DX200.4
4-channel car amplifier 25 watts RMS x 4
IN STOCK
- 100 watts RMS x 2 bridged at 4 ohms
- selectable high- and low-pass filters
- Class D amp technology
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Sound Ordnance M-4075
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 240 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp inputs and outputs
Special Offer
Free Shipping
$149.99
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Rockford Fosgate Prime R250-4
4-channel car amplifier 40 watts RMS x 4
IN STOCK
- 125 watts RMS x 2 bridged
- fixed high-pass and variable low-pass filters
- preamp inputs and outputs
Special Offer
Free Shipping
$159.99
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Boston Acoustics GTA-704
4-channel car amplifier 70 watts RMS x 4
IN STOCK
- 125 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp and speaker-level inputs
Special Offer
Free Shipping
$164.99 After $65.00 Price Break
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Pioneer GM-6500F
4-channel car amplifier — 60 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 bridged
- 4-channel selectable high- and low-pass filters
- preamp- and speaker-level inputs
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Sound Ordnance M-4100
4-channel car amplifier 100 watts RMS x 4
IN STOCK
- 270 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters
- preamp inputs
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Alpine MRP-F300
V-Power Series 4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged
- variable low- and high-pass filters
- selectable bass boost
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JBL GTO-504EZ
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged at 4 ohms
- Simple Setup System with test tone CD for perfect gain setting
- preamp outputs and speaker-level inputs
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Kenwood KAC-8405
4-channel car amplifier 60 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 bridged
- 50-200 Hz variable high- and low-pass filters
- dual cooling fans
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MTX Terminator TN400/4
4-channel car amplifier 45 watts RMS x 4 at 4 ohms
IN STOCK
- 150 watts RMS x 2 bridged
- selectable full/high-pass/low-pass filters
- fan cooled
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Rockford Fosgate Prime R300-4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 150 watts RMS x 2 bridged
- fixed high-pass and variable low-pass filters
- preamp inputs
Special Offer
Free Shipping
$199.99
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JL Audio JX360/4
4-channel car amplifier 70 watts RMS x 4
IN STOCK
- 180 watts RMS x 2 at 4 ohms
- variable high- and low-pass filter (50-200 Hz, 12 dB/octave)
- speaker-level inputs
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Diamond Audio D300.4
4-channel car amplifier 50 watts RMS x 4
LOW STOCK
- 150 watts RMS x 2 at 4 ohms bridged
- variable high- and low-pass filters on front and rear channels
- speaker-level and preamp inputs
Free Shipping
$249.99
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Infinity Reference 475a
4-channel car amplifier 75 watts RMS x 4
IN STOCK
- 90 watts RMS x 4 at 2 ohms
- 180 watts RMS x 2 in bridged mode
- variable high- and low-pass filters
Free Shipping
$249.99
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Kicker 11DX400.4
4-channel car amplifier 50 watts RMS x 4
IN STOCK
- 200 watts RMS x 2 bridged at 4 ohms
- variable high- and low-pass filters
- Class D amp technology
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MTX Road Thunder RT604
4-channel car amplifier 60 watts RMS x 4
LOW STOCK
- 180 watts RMS x 2 bridged
- variable high- and low-pass filters
- preamp and speaker-level inputs
Learning Center

- Car Amplifier Shopping Guide
- If you want your music to be loud, amplifiers are definitely part of the picture. But an amp can do much more...

- Video: Car Amplifier Power
- We describe the basics of deciding how much power an amplifier should have when you're trying to match it to...
- Video: Sound Ordnance Amplifiers
- Video: Kicker IX Amplifiers
- Video: Car Amplifier Channels
- Video: Car Amplifier Build Quality
- Video: Car Amplifier Features
- Video: Installing A Car Amplifier
- Video: Amplifier Wiring Kits
- General Amplifier Installation Tips
- Amplifier Installation Guide
- Subwoofer Wiring Diagrams
- Amplifier Wiring Diagram
- Amplifiers: How to Suppress Noise
- Car Amplifiers FAQ
- Car Amplifiers Glossary
- Cable Gauge Chart
- Tuning Your Subs
- Focal's Utopia speakers take center stage
- How to Match Subwoofers and Amplifiers
- Video: JBL GTO amplifiers
- Video: Alpine KTP-445U Universal Power Pack Amplifier
- Using Test Tones to Set Amplifier Gain
- Find more articles, videos, and reviews on the Learn tab




















