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Product comparison
Car Amplifiers Comparison

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Alpine KTP-445A Power Pack
Compact upgrade amplifier for your Alpine receiver — 45 watts RMS x 4
  • dimensions: 7-7/8"W x 1-1/2"H x 2-9/16"D
  • compact amplifier for Alpine in-dash receivers
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Alpine KTA-450 Power Pack
Compact 4-channel car amplifier — 50 watts RMS x 4
  • 100 watts RMS x 2 bridged at 4 ohms
  • Dynamic Peak Power (DPP) technology adds a burst of power when needed
  • PowerStack bracket included for mounting amp behind Alpine iLX-W650 digital multimedia receiver (#500ILXW650)
Discontinued item

Adding...
Rockford Fosgate Prime R400-4D
4-channel car amplifier — 75 watts RMS x 4

This item is no longer available

42 reviews
  • 200 watts RMS x 2 bridged
  • variable high- and low-pass filters
  • preamp inputs and outputs
     
Condition New Stock New Stock New Stock
Performance Alpine KTP-445A Power Pack Alpine KTA-450 Power Pack Rockford Fosgate Prime R400-4D
RMS Power Output (Wt x Channels) 45 x 4
50 x 4
75 x 4
Peak Power Output (Wt x Channels) 90 x 4 100 x 4 ---
Power at 2 Ohms (Wt x Channels) N/A 45 x 4 100 x 4
Bridged Power (Wt x Channels) N/A 100 x 2 200 x 2
N/A 4 4
2 2 2
20-20k Hz 15-50k Hz 20-20k Hz
1% 1% 1%
84 dB 82 dB 90 dB
14.4v 14.4v 14.4v
Features Alpine KTP-445A Power Pack Alpine KTA-450 Power Pack Rockford Fosgate Prime R400-4D
D D D
N/A No 50-250 Hz
N/A N/A 12 dB/oct
N/A Off, 60, 80, 120Hz 50-250 Hz
N/A 12 dB/octave 12 dB/oct
No No 0-18 dB
N/A N/A 45 Hz
No No No
15 20 40
Harness RCA No
No No 1 pair
7-7/8 7 9-1/8
1-1/2 1-3/8 2
2-9/16 3-9/16 7-3/8
1 Year 1 Year 1 Year
1 Year 1 Year 1 Year
  Owner's Manual Owner's Manual Owner's Manual
Hands-on Research Hands-on Research Hands-on Research
Remove

Adding...
Top Seller
Alpine KTP-445A Power Pack
Compact upgrade amplifier for your Alpine receiver — 45 watts RMS x 4
Remove

Adding...
Top Seller
Alpine KTA-450 Power Pack
Compact 4-channel car amplifier — 50 watts RMS x 4
Remove

Adding...
Rockford Fosgate Prime R400-4D
4-channel car amplifier — 75 watts RMS x 4

This item is no longer available

42 reviews
TOP