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PowerBass ATM550.4

1200W Max Atom Series 4-Channel Amplifier

5.0

(2 reviews)

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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
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Rating Distribution:
5 star:
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4 star:
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3 star:
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1 star:
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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.
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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.
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Gauge Adapter
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Monster Cable Gauge Reducer (4 AWG to 8 AWG)Monster Cable Gauge Reducer (4 AWG to 8 AWG)
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Bass Remote Control
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Speaker Wire
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12 Gauge Wire - 20 ft. of Dual Twist Speaker Cable with Sleeves for a Clean Install
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12 Gauge Wire - 15 ft. of Speaker Cable with Twisted Construction
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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.
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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.
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4 AWG / 4 Gauge Firewall Bushing
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Testing and Performance
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AutoSound 2000 CD-104AutoSound 2000 CD-104
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Product Summary

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

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