Why Shop Sonic Free Shipping Free Tech Support Easy Returns Low Price Guarantee Details
Free Kicker active-style headphones with a purchase of $100+ of Kicker Gear
Print

PowerBass ATM550.4

1200W Max Atom Series 4-Channel Amplifier

5.0

(2 reviews)

Read 2 reviews

Write a review

The product on this page is discontinued.

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
  • Atom Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 75 watts x 4 chan.
    • 2 ohms: 150 watts x 4 chan.
    • Bridged, 4 ohms: 300 watts x 2 chan.
  • Max power output: 300 watts x 4 chan.
  • Pulse Width Modulated MOSFET power supply for high power output and low impedance stability
  • LED power (green) indicators
  • Selectable bass boost (0, 6, 12 dB @ 40 Hz)
  • Double sided circuit board construction
  • Soft Start Turn-on eliminates pops and clicks
  • 4/3/2 channel operation
  • Speaker-level inputs with signal sensing for automatic turn-on
  • System protection circuitry (thermal, overload, and speaker short protection, and DC output)
  • Low profile aluminum finned heatsink for extreme heat dissipation
  • Custom tooled solder-less speaker and power terminal blocks
  • Double sided PCB high quality quality printed circuit board maximizes current flow and increases sonic excellence
  • Ultra efficient design results in a compact A/B class footprint and low profile chassis with uncompromised sound reproduction
  • High and low level line inputs
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable gain control
  • Input sensitivity: 0.2-5V
  • Variable high-pass filter (50-500 Hz, 24 dB/octave)
  • Variable low-pass filter (50-500 Hz, 24 dB/octave)
  • Damping factor: >150
  • Frequency response: 10-30,000 Hz
  • Dimensions: 11"L x 7-3/4"W x 2-1/4"H
  • 8-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.
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty
Power Specifications - Full Range Channels
RMS Power @ 4 ohms75 watts x 4 channels
RMS Power @ 2 ohms150 watts x 4 channels
RMS Power @ 1 ohmNot Stable
Bridged RMS Power300 watts x 2 channels
Peak Power Output300 watts x 4 channels
Amplifier Specifications
Amplifier ClassAB
Number of Channels4
Total Peak Power Output1200 watts
Total RMS Power Output600 watts
Maximum Input Gauge Size8 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power0.5%
Speaker Level InputsYes
Preamp OutputsNo
Built-in CrossoverLow-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency50 - 500 Hz
Low-Pass Crossover Frequency50 - 500 Hz
Subsonic FilterN/A
Signal-to-Noise Ratio80 dB
Channel SeparationN/A
Bass Boost0 - 12 dB
Bass/Gain RemoteNo
Fan CooledNo
Fuse Rating25A x 2 
CEA-2006 CompliantNo
Warranty and Return Policy
Return Policy Standard Return Policy
Parts Warranty Duration1 year
Labor Warranty Duration1 year
Warranty ProviderManufacturer
Customer Review Summary for PowerBass ATM550.4
Average Customer Rating is 5.0 out of 5 stars:
5.0
based on 2 Reviews
Share your thoughts with others:
Write a Review
Rating Distribution:
5 star:
.
100%
4 star:
.
0%
3 star:
.
0%
2 star:
.
0%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
5.0
Value
5.0
Features
5.0
Design
4.5
Usability
5.0
what's this?
Most Helpful Customer Reviews:
January 4, 2012 Good little amp
Review by
Michael from Mount Juliet, TN
Overall
Durability
Value
Features
Design
Usability
Got this for friend and helped him install in Infinity. Was very easy to install and all the features were straight ahead. He is powering CDT components & coaxials in rear. Plenty of power, no distortion & does not get hot.
Help other customers find the most helpful reviews
Was this review helpful to you?
Yes No
 Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious Share on Buzz
November 2, 2011 Decent
Review by
Mr. Mike from Nashville, Tn.
Overall
Durability
Value
Features
Design
Usability
Bought for friend when he started having issues with RE Audio amp. Put in his new car and powering CDT comp. in front & CDT coaxials in rear. Install was easy & set up was a breeze. His speakers are rated at 100w & 90w respectfully. This amp drives these speakers with no problem, no distortion & does not get warm. Good little amp & I recommend with no reservation.
Help other customers find the most helpful reviews
Was this review helpful to you?
Yes No
 Report Abuse | Write a Review
Share on Facebook Share on Twitter Share on Delicious Share on Buzz
Amplifier Wiring Kits
Get the wires you need to properly install and power your car amp.
 ProductPriceAdd?
Kicker ZCK4Kicker ZCK4
Complete 4 Gauge Amp Wiring Kit with RCA Interconnect Cables and Speaker Wire!		$94.99
StreetWires ZN1K-04StreetWires ZN1K-04
4 Gauge (AWG) ZN1 Series Single Amplifier Installation Kit for Systems up to 1000 Watts		$37.99
Kicker PKD4Kicker PKD4
Dual Amplifier 4 Gauge Amp Installation Kit w/ Distribution Blocks		$119.99
Gauge Adapter
In situations where the input gauges on the amplifier is smaller than the power/ground cable gauge, one of these gauge adapters should be used. They are easy to use and enable your amplifier to to still receive all the power that it requires.
 ProductPriceAdd?
Monster Cable Gauge Reducer (4 AWG to 8 AWG)Monster Cable Gauge Reducer (4 AWG to 8 AWG)
Chrome plated gauge reducer allows 4 AWG cable to fit in 8 AWG inputs.		$6.00
Bass Remote Control
Control the volume level of your bass and amplifier from the front of the vehicle.
 ProductPriceAdd?
Universal Remote Level Bass ControlUniversal Remote Level Bass Control
Controls bass level and frequency via RCA/Interconnect connectors on any amp.		$14.99
Small Universal Remote Level Bass ControlSmall Universal Remote Level Bass Control
The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.		$12.99
Speaker Wire
Improve the sound quality by delivering more power when replacing your factory wiring. High quality speaker will maximize your amplifier investment and system performance.
 ProductPriceAdd?
Kicker XW1220 Speaker WireKicker XW1220 Speaker Wire
12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install		$24.49
StreetWires SCP1215BL - 12 AWG Speaker WireStreetWires SCP1215BL - 12 AWG Speaker Wire
12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction		$19.99
RCA Interconnects
You will need a good set of RCA interconnect cables to connect your amplifier to your head unit. Using high quality cables ensure the best sound possible by reducing unwanted noise interference, providing tight contacts, and utilizing the latest in cable technology.
 ProductPriceAdd?
Kicker 4-Channel RCA Audio Interconnect CableKicker 4-Channel RCA Audio Interconnect Cable
4 Meters (13 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted-Pair, Hyper-Flex Technology		$21.99
Kicker X-Series RCA Interconnect CableKicker X-Series RCA Interconnect Cable
19 ft. of 4-Channel X-Series RCA Cable with dual twisted-pair conductors, hyper-flex technology, and gold-plated k-cut collars for excellent signal transfer.		$44.99
StreetWires ZN9 Series Interconnect CableStreetWires ZN9 Series Interconnect Cable
16.4 ft. of 4-Channel RCA Cable with Rhodium-plated contacts and ZeroNoise construction for clear signal transfer!		$99.99
Installation, Tools & Accessories
With our professional install card, you can have your amp installed by a pro near you, or you can purchase tools and do the install yourself.
 ProductPriceAdd?
StreetWires FB4StreetWires FB4
4 AWG / 4 Gauge Firewall Bushing		$7.99
Kicker DB1448 (09DB1448) - Top of the Line!Kicker DB1448 (09DB1448) - Top of the Line!
Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs		$18.99
Professional Installation for your Car Power AmplifierProfessional Installation for your Car Power Amplifier
Covers labor charges through our professional installer network.		$89.99
Testing and Performance
Optimize your system's performance with testing tools such as SPL meters, bass test discs and more!
 ProductPriceAdd?
AutoSound 2000 CD-104AutoSound 2000 CD-104
The ultimate amplifier level setting disc used for evaluation of audio components		$12.99
AutoSound 2000 CD-102AutoSound 2000 CD-102
High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.		$12.99
AutoSound 2000 CD-103AutoSound 2000 CD-103
Audiophile reference series test disc for evaluation of all audio components.		$12.99

Product Summary

Manufacturer: PowerBass
Model number: ATM550.4
UPC: 823871004041
Weight: 6.65 lbs
Internal SKU: atm5504
Internal product ID: 34515

Why Sonic Electronix?

Musical Mayhem Sweepstakes sponsored by MTX Audio. 3 winners, $2,300 in prizes!

Customer Testimonial

Sonic Electronix is the best place i have found to shop for car audio equipment. They have the best pricing and selection as well as fast shipping. they also carry lots of products at unbeatable prices.

- boozeralex from Illinois

See more…

Recently Viewed Items

atm5504 thumbnail

6-1/2" Dual Cone Marine Speakers

atm5504 thumbnail

Dual 10" Bandpass Enclosure

atm5504 thumbnail

1000W RMS, Class D Monoblock HFi Series Amplifier