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Polk Audio PA400.1 (PA 400.1)

800W Max, Class D Monoblock Amplifier

  • 4.8

(4 reviews)

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The product on this page is discontinued.

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Customer Testimonial

I love the new product I just purchased from your business. I am a customer already and all your products are quality, inexpensive, and u offer fast shipping. Other companies cost much, much more, and shipping charges and delivery times are outrageous. Thanks for the great customer service.

- jaybabie7 from Menifee,CA

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  • PA Series Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 200 watts x 1 chan.
    • 2 ohms: 300 watts x 1 chan.
    • 1 ohm: 400 watts x 1 chan.
  • Max power output: 800 watts x 1 chan.
  • PWM (Pulse Width Modulated) MOSFET power supply
  • Wired remote volume level control included
  • LED power and protection indicators
  • Selectable bass boost (0, +8 dB at 40 Hz)
  • Double-layer fiberglass epoxy printed circuit boards
  • 1 ohm stable
  • High-speed MOSFET switching power supply and high current Bipolar Output Transistors pump maximum voltage and high current to your subwoofers
  • Connection for optional LED light bar or optional amplifier cooling
  • Power/ground-reversal, thermal, short, current, overdraw, and low impedance protection circuitry
  • Cast aluminum textured end caps
  • Switchable 180° phase inversion
  • Variable input sensitivity optimizes match with different signal sources
  • Unity gain pass-through RCA jacks
  • Mounting hardware with rubber isolation grommets and extra fuses included.
  • Effective Damping Factor: >150
  • Anodized extruded brushed-aluminum cover for maximum heat dissipation
  • Preamp RCA outputs
  • Chrome-plated RCA level inputs
  • Chrome-plated screw terminals
  • Variable low-pass filter (30-250 Hz, 12 dB/octave)
  • Subsonic Filter (24 dB at variable frequencies)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-250 Hz
  • Dimensions: 10-1/2"L x 10-1/4"W x 2-3/4"H
  • 4-gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits when purchased together with this amplifier.
  • 1-year SonicElectronix.com warranty
Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms 200 watts x 1 channels
RMS Power @ 2 ohms 300 watts x 1 channels
RMS Power @ 1 ohm 400 watts x 1 channels
Peak Power Output 800 watts x 1 channels
Amplifier Specifications
Amplifier Class D
Number of Channels 1 - Mono
Total Peak Power Output 800 watts
Total RMS Power Output 400 watts
Maximum Input Gauge Size 4 AWG
Minimum Impedance Unbridged 1 ohms
THD at Rated RMS Power 1%
Speaker Level Inputs No
Preamp Outputs 1 pair
Built-in Crossover Low-pass (LP)
Low-Pass Crossover Frequency 30 - 250 Hz
Subsonic Filter Variable
Signal-to-Noise Ratio 98 dB
Bass Boost 0 - 8 dB
Bass/Gain Remote Yes
Fan Cooled Optional (Accessory is required)
Fuse Rating 25A x 2 
CEA-2006 Compliant Yes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration 1 year
Labor Warranty Duration 1 year
Warranty Provider Sonic Electronix
Customer Review Summary for Polk Audio PA400.1 (PA 400.1)
Average Customer Rating is 4.8 out of 5 stars:
  • 4.8
based on 4 Reviews
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Rating Distribution:
5 star:
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 75%
4 star:
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 25%
3 star:
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 0%
2 star:
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 0%
1 star:
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 0%
what's this?
Average Attributes Rating:
Durability
  • 4.5
 4.5
Value
  • 4.5
 4.5
Features
  • 4.8
 4.8
Design
  • 4.8
 4.8
Usability
  • 5.0
 5.0
what's this?
Most Helpful Customer Reviews:
January 8, 2012 Great amp!
Review by
crummyd from ATL, GA
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Bought this amp (PA400) to match the polk dxi 12" dual voice coil sub. Built custom enclosure based on polk's specs and wired to 2 ohms and can't believe how good it sounds. Just one sub and it has clean, tight and thunderous bass reproduction no matter what music i listen to at all volume levels. For the money, I have never heard anything that comes close to this. Great job Polk Audio!!!
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December 23, 2011 good amp
Review by
John from Wyoming, MN
Overall
  • 4.0
Durability
  • 4.0
Value
  • 3.0
Features
  • 4.0
Design
  • 4.0
Usability
  • 5.0
Good amp works great not many problems yet and ive owned it for about 7 months. Ive got it in a crown vic police interceptor powering a pair of kicker L3 12's and feeding it with signal is a Kenwood KDC-HD548U. Sound is great. However on the head unit the volume rang is 0 - 35 and it sounds best up to 27 but when i play a song with loads of bass and i turn it up to around 32 the amp turns off and i have to turn it back down and wait around a minute or turn the headunit off and back on again not sure if thats the headunit or the amp. Other than that the amp is great also keep in mind that different amps reproduce bass in different ranges better than others like in this set up the mid and higher bass is loud and clear but you get around the subsonic range and then it seams like its struggling to reproduce the bass.
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August 26, 2011 Looking 4 a 1 ohm stable amp?
Review by
Parker from Fargo, Nd
Overall
  • 5.0
Durability
  • 5.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Looking for a one ohm stable amp. 400watts rms @ 1 ohm for my JBL 12" power series (Block-beater BTW! :) This amp is a perfect match. POLK Audio is #1 next to JL, Crossfire, JBL, MTX, Sundown, Audioque, Digital Designs, RE Audio, and such. Can't go wrong never overheats Clean power all the time.
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May 20, 2010 Perfect, perfect, ...
Review by
JaM from Dunajska Streda, Slovakia
Overall
  • 5.0
Durability
  • 4.0
Value
  • 5.0
Features
  • 5.0
Design
  • 5.0
Usability
  • 5.0
Compact amplifier PA400.1 is perfect solution in this category. I listen only music in my car. I am not "alegoric car" from Rio de Janeiro!
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RCA Interconnects
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Installation, Tools & Accessories
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Product Summary

Manufacturer: Polk Audio
Model number: PA400.1
UPC: 747192113612
Weight: 11.50 lbs
Internal SKU: pa4001
Internal product ID: 13579