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Jensen Power 400

400W Max, 2-Channel Car Amplifier (POWER400)

4.3

(15 reviews)

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The product on this page is discontinued, but there is a newer model available:
Newer Model: Jensen Power 400.2
power4002 thumbnail
$59.99In Stock

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
  • Power Series 2-Channel Class AB Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 60 watts x 2 chan.
    • 2 ohms: 80 watts x 2 chan.
    • Bridged, 4 ohms: 160 watts x 1 chan.
  • Max power output: 400 watts x 1 chan.
  • MOSFET power supply
  • Design Minimizes Distortion and Reduces Idle Current
  • High Current Bi-Polar Output Transistors
  • LED power, standby, and fault indicators
  • Pass-Thru RCAs
  • 4/3/2 channel operation
  • Preamp RCA outputs
  • Short Circuit, DC-offset and Thermal Overload Protection Circuitry
  • Variable high-pass filter (40-300 Hz)
  • Variable low-pass filter (40-300 Hz)
  • CEA-2006 compliant amplifier
  • Frequency response: 5-60000 Hz
  • 8-gauge power and ground leads recommended. Contact us for information regarding a discount on a select amplifier kit when purchased together.
  • Dimensions: 9-1/2"L x 9"W x 2.5"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Product History:
Jensen Power 400.2 thumbnail
(newest, current model)
Jensen Power 400 thumbnail
(previous model, replaced by Jensen Power 400.2)
Power Specifications - Full Range Channels
RMS Power @ 4 ohms60 watts x 2 channels
RMS Power @ 2 ohms80 watts x 2 channels
RMS Power @ 1 ohmNot Stable
Bridged RMS Power160 watts x 1 channel
Peak Power Output400 watts x 1 channel
Amplifier Specifications
Amplifier ClassAB
Number of Channels2
Total Peak Power Output400 watts
Total RMS Power Output240 watts
Maximum Input Gauge Size8 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power1%
Speaker Level InputsNo
Preamp Outputs1 pair
Built-in CrossoverLow-pass (LP)
High-pass (HP)
Full (AP)
High-Pass Crossover Frequency40 - 300 Hz
Low-Pass Crossover Frequency40 - 300 Hz
Subsonic FilterN/A
Signal-to-Noise Ratio100 dB
Channel SeparationN/A
Bass BoostN/A
Bass/Gain RemoteNo
Fan CooledNo
Fuse Rating25A x 1 
CEA-2006 CompliantYes
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Customer Review Summary for Jensen Power 400
Average Customer Rating is 4.3 out of 5 stars:
4.3
based on 15 Reviews
Share your thoughts with others:
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Rating Distribution:
5 star:
.
.
53%
4 star:
.
.
33%
3 star:
.
.
7%
2 star:
.
.
7%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
4.6
Value
4.5
Features
4.3
Design
4.3
Usability
4.9
what's this?
Quick Comparison:
Most helpful favorable review vs. Most helpful critical review
Most Helpful Customer Reviews:
January 7, 2011 BEEFY Heat Sinks
Review by
Gary from Garden Grove
Overall
Durability
Value
Features
Design
Usability
Wow... got package y'day. Weight is a bit heavier than you'd think it'd be. Quick look shows why, heat sinks appear to be quite dense! I can believe the other reviewer who said he ran one over in the driveway without breaking it. Birth sheet showed 75 RMS both sides.

Bought this to replace a 4ch amp I'm currently using in my MoTo. Running that amp w/ 2 4" speakers + JL6W3V3 proved to be just a lil too much for my MoTo electrical system without adding another battery. (Kept killing-off the battery) So I said screw that and took the sub back out.

I ordered this amp to ensure that my power draw is now lower. And also that other amp is a nice Eclipse EA4200 so I might put it in my wife's car to replace the SSL F4.1200 currently in there.
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December 28, 2010 Jensen Power 400
Review by
AAC from Seaside, CA
Overall
Durability
Value
Features
Design
Usability
This amp is great.It gives out more power that you can imagine. I would recommend this amp to anyone who is new to car audio system
pros: Value, Quality, Durability
cons: None
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November 24, 2010 Decent, when not put to the max
Review by
Gyakusetsu from Denver, CO
Overall
Durability
Value
Features
Design
Usability
I have owned this amp for over 2 years and it has performed beautifully in 2 different cars now. The power level is all a normal person needs powering a single-sub with un-powered mains. Very satisfying mid-bass amplification for dub-step.

I had an issue when I first bought it where the protection would come on when listening to heavy bass, but I found fine-tuning the levels both improved sound quality (it removed distortion I didn't even notice) and totally eliminated the problem. The installers I used were hacks and tried to milk all they could out of it to make me think I bought something better than I did (don't try to max this thing out... it's touchy).

Eventually I will upgrade, but I'll probably just get one more of these guys and use it for my mains. Great product.
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November 20, 2010 yep
Review by
ok from abilene tx
Overall
Durability
Value
Features
Design
Usability
great product and fast shipping
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November 18, 2010 not for sub
Review by
bobbyo from Where were these photos taken?
Overall
Durability
Value
Features
Design
Usability
that not a sub amp u need a d or a b class an ab class is for hight an mids
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View All 15 Reviews for Jensen Power 400
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Testing and Performance
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Product Summary

Manufacturer: Jensen
Model number: Power-400
UPC: 043258303554
Weight: 6.00 lbs
Internal SKU: power400
Internal product ID: 10298

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Customer Testimonial

I had good contact through email including a tracking number allowing me to plan for my package's arrival. Overall, this was a good experience and i won't hesitate purchasing through Sonic Electronix again.

- Nick from North Carolina

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