Garage
Shop

See all parts that fit your 2011 A5

Polk Audio PA400.1 (PA 400.1)

800W Max, Class D Monoblock Amplifier

Product videos
highlight-star-icon

PA Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 300W x 1 chan. @ 2 ohm • 400W x 1 chan. @ 1 ohm • 800W x 1 chan. Max • 1 ohm stable • Preamp RCA outputs

Learn more about the pa4001

We apologize

This item has been discontinued


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

Club 620F main

JBL Club 620F (SPKCB620FAM)

330W Peak (110W RMS) 6.5" Club Series 2-way 3-ohm Shallow Mount Coaxial Car Speakers

2
-38.48%

$79.95

List price $129.95

PH654 main

Cerwin-Vega PH654

600W Peak (300W RMS) 6.5" PRO Series Full Range Coaxial 4-ohm Speakers

2
-16.67%

$189.99

List price $227.99

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99

Product Highlights


PA Series Class D Monoblock Car Amplifier • 200W x 1 chan. @ 4 ohm • 300W x 1 chan. @ 2 ohm • 400W x 1 chan. @ 1 ohm • 800W x 1 chan. Max • 1 ohm stable • Preamp RCA outputs

Description


Polk Audio brand icon

Authorized dealer

  • PA Series Class D Monoblock Car Amplifier
  • RMS Power Rating:
    • 4 ohm: 200 watts x 1 chan.
    • 2 ohm: 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

Best selling similar products

NDA12001 small

NVX NDA12001

• 500 watts x 1 channel @ 4 ohm
• 850 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

(13)

$169.99

List price $239.99

ATOM 1300.1 PRO small

Deaf Bonce Apocalypse ATOM 1300.1 PRO

• 490 watts x 1 channel @ 4 ohm
• 780 watts x 1 channel @ 2 ohm
• 1300 watts x 1 channel @ 1 ohm
• Total RMS Power: 1300 watts
• Class D 1 ohm Stable Monoblock Amplifier

$199.90

List price $199.90

VAD17001v2 small

NVX VAD17001 v2 (VAD17001v2)

• 800 watts x 1 channel @ 4 ohm
• 1350 watts x 1 channel @ 2 ohm
• 1700 watts x 1 channel @ 1 ohm
• Total RMS Power: 1700 watts
• Class D 1 ohm Stable Monoblock Amplifier

(35)

$259.99

List price $335.99

JD1000/1 small

JL Audio JD1000/1

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

(22)

$429.99

List price $429.99

CXA1200.1 small

Kicker CXA1200.1 (46CXA12001T)

• 600 watts x 1 channel @ 4 ohm
• 1200 watts x 1 channel @ 2 ohm
• 1200 watts x 1 channel @ 1 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

(18)

$399.99

List price $429.99

VADM1 small

NVX VADM1 v2 (VADM1v2)

• 240 watts x 1 channel @ 4 ohm
• 400 watts x 1 channel @ 2 ohm
• 600 watts x 1 channel @ 1 ohm
• Total RMS Power: 600 watts
• Class D 1 ohm Stable Monoblock Amplifier

(16)

$189.99

List price $239.99

VAD10001v2 small

NVX VAD10001 v2 (VAD10001v2)

• 420 watts x 1 channel @ 4 ohm
• 760 watts x 1 channel @ 2 ohm
• 1000 watts x 1 channel @ 1 ohm
• Total RMS Power: 1000 watts
• Class D 1 ohm Stable Monoblock Amplifier

(37)

$209.99

List price $227.99

R2-1200X1 small

Rockford Fosgate Prime R2 R2-1200X1

• 400 watts x 1 channel @ 4 ohm
• 800 watts x 1 channel @ 2 ohm
• Total RMS Power: 1200 watts
• Class D 1 ohm Stable Monoblock Amplifier

(23)

$399.99

List price $449.99

JD500/1 small

JL Audio JD500/1

• 250 watts x 1 channel @ 4 ohm
• 500 watts x 1 channel @ 2 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable Monoblock Amplifier

(12)

$299.99

List price $299.99

Reference 10001A small

Infinity Reference 10001A (AMPRF10001AAM)

• 600 watts x 1 channel @ 4 ohm
• 1000 watts x 1 channel @ 2 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable Monoblock Amplifier

$499.95

List price $569.95

Specifications & Details


Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
200 watts x 1 channel
RMS Power @ 2 ohms
300 watts x 1 channel
RMS Power @ 1 ohm
400 watts x 1 channel
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 ohm
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
Remote bass/level controller
Yes
Fuse Rating
25A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

PA400.1

Weight:

11.50lbs

Internal SKU:

pa4001

Internal Product ID:

13579

Product and How-to Videos


Customer Ratings & Reviews


Polk Audio PA400.1 (PA 400.1) thumbnail image

5 star
75%
4 star
25%
3 star
0%
2 star
0%
1 star
0%



Durability
4.5
Value
4.5
Features
4.8
Design
4.8
Usability
5

Customer Reviews

Sort by:

Loading...

Great amp!

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!!!

By crummyd on January 8, 2012

8 found this helpful


Perfect, perfect, ...

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!

By JaM on May 20, 2010

8 found this helpful


Looking 4 a 1 ohm stable amp?

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.

By Parker on August 26, 2011

7 found this helpful


good amp

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.

By John on December 23, 2011

5 found this helpful




DLA77082 small

Philips DLO iBoom Home # DLA77082

iBoom Alarm Clock Radio with iPod Docking Station

$49.99

List price $99.99

BS212S small

MTX Audio Bass Slammer BS212S

Dual 12" Sealed Unloaded Enclosure

(7)

$69.99

List price $99.99

The-Epicenter600-12W3v3-2 small

413Watt (Dyno Certified) JL Audio + AudioControl Digital Bass Restored Combo

JL Audio 12W3v3-2 12" W3v3 Series Subwoofer Driver + AudioControl The Epicenter 600 Monoblock Epicenter Series Class D Amplifier

(47)

$614.42

List price $1069.98

DEH-P690UB small

Pioneer Premier DEH-P690UB

CD/MP3/WMA Receiver with Remote, USB Input and Built-in iPod Controls and Adapter Included!

(16)

$229.99

List price $299.99

ST-LGOVAL small

Mobile Solutions Large Oval Cutting Template Set (ST-LGOVAL)

Large Oval Cutting Template Set - contains 6 pieces

$87.99

List price $113.99

A1000.2D small

Hifonics Alpha 1000 (A1000.2D)

1000W Peak Class D Alpha Series 2-Channel Car Amplifier

(2)

$149.99

List price $199.99

APS-996A small

Prestige APS-996A by Audiovox

Remote Security System with 4-Mode Shock Sensor and Extended Range Remote Start (APS996A)

$129.99

List price $249.99

HDJ-1500-K small

Pioneer HDJ-1500 - Black

Professional Swiveling DJ Style Wired Stereo Headphones with Powerful 50 mm Drivers & Carrying Pouch

$136.99

List price $189.99

No picture

Sony XM-GS6DSP (Open Box, Complete)

780W RMS GS Series 2-ohm Stable 5/6 Channel Class-D Amplifier with Digital Signal Processor

$349.99

List price $399.99

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2011 Audi A5

2008 GMC Envoy

2015 Ford Expedition

2002 Ford Explorer

2003 Ford Excursion

2006 MINI Cooper

2004 Dodge Sprinter 2500

2012 Subaru Forester

2011 Subaru Outback

2012 Dodge Challenger

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.