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MB Quart OA800.4

800W RMS 4-Channel Onyx Series Class SQ Full-Range Bridgeable Power Amplifier

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• 100 Watts RMS x 4 @ 4 ohms
• 200 Watts RMS x 4 @ 2 ohms
• 400 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 1600 Watts
• 2-Ohm Stable operation, bridgeable to 4-ohms
• Variable Bass Boost (Bass EQ, Ch 3 & 4 only): 0 - +9 dB at 45Hz
• 16 AWG speaker output connections
• Dimensions: 14.17" L x 9.45" W x 2.23" H

Learn more about the oa8004

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This item has been discontinued

Product Highlights


• 100 Watts RMS x 4 @ 4 ohms
• 200 Watts RMS x 4 @ 2 ohms
• 400 Watts RMS x 2 @ 4 ohm, Bridged
• Total Peak Power: 1600 Watts
• 2-Ohm Stable operation, bridgeable to 4-ohms
• Variable Bass Boost (Bass EQ, Ch 3 & 4 only): 0 - +9 dB at 45Hz
• 16 AWG speaker output connections
• Dimensions: 14.17" L x 9.45" W x 2.23" H

Description


MB Quart brand icon

Authorized dealer



Onyx Amplifiers

MB Quart Onyx Q-Stasis Q-Stasis Pre-Amp Stage

MB Quart has always been an amplifier brand that's been attributed with quality audio. Onyx amplifiers, although priced for a more competitive market, still retain this quality. Onyx amps are an exceptional first step in putting together your car audio system. They're high powered amplifiers that use quality components to ensure that they sound great.

The 2013 Onyx amplifiers use a Q-Statis pre-amplifier stage. This addition is designed to keep incoming noise from source units at nearly immeasurable levels, improving sound quality. MB Quart also incorporates more new technology on the amplifiers with their new Fluid-Fets output devices. These are able to efficiently produce power and mimic the sound quality of high end home amplifiers.




MB Quart Onyx MOSFETS On-Board Equalization

The multi-channel amplifiers are equipped with Class SQ topology. This circuitry, when matched alongside the Q-Stasis preamp stage is capable of outperforming standard Class A/B amplifiers in sonic accuracy and clarity.

MB Quart multi-channel amplifiers are an exceptional choice when building out your next car audio system. These amps sound great, perform just as well, and even look extremely stylish. Their black finish and illuminating logo help them look awesome when running in your vehicle. Pick yours up today!




General Features:

  • Onyx Series 4-Channel Class SQ Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 100 watts x 4 chan.
    • 2 ohms: 200 watts x 4 chan.
    • Bridged, 4 ohms: 400 watts x 2 chan.
  • FLUID-FETS MOSFET Circuit maximizes power efficiency while improving sound quality
  • Heavy duty aluminum alloy heat-sink with illuminated MB Quart logo
  • LED power (green) and protect (red) indicators
  • Unbalanced RCA jack inputs
  • Built-in system diagnostics
  • 2-Ohm Stable operation, bridgeable to 4-ohms
  • 16 AWG speaker output connections
  • Full-range Preamp RCA outputs to daisy chain multiple amps
    Full-range only if a full range signal is connected to input
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Selectable input modes: 4ch / 2ch , allows for one set of inputs to be used
  • Input sensitivity: 200mV - 6V
  • Selectable crossover modes: LP / HP / FULL
  • Variable high-pass filter: 10 - 1,200 Hz
  • Variable low-pass filter (Ch 3 & 4 only): 30 - 150 Hz
  • Variable Bass Boost (Bass EQ, Ch 3 & 4 only): 0 - +9 dB at 45Hz
  • Frequency response: 10 - 45,000 Hz
  • Damping factor: >180
  • Signal-to-noise Ratio: >92dB
  • Total harmonic distortion: 0.05%
  • Channel separation: >80dB
  • Recommended Fuse Rating: 40A x 2
  • Dimensions: 14.17"L x 9.45"W x 2.23"H
  • 4 gauge power and ground wiring is recommended for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier. Click Here for our contact information.
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty
Check out the MB Quart OA800.4 Owner's Manual

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
100 watts x 4 channel
RMS Power @ 2 ohms
200 watts x 4 channel
Bridged RMS Power
400 watts x 2 channel
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
200 watts x 4 channel
Peak Power @ 2 ohms
400 watts x 4 channel
Bridged Peak/Max Power
800 watts x 2 channel
Amplifier Specifications
Series
ONYX Series
Amplifier Class
SQ
Number of Channels
4-Channel
Total Peak Power Output
1600 watts
Total RMS Power Output
800 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
0.05%
Speaker Level Inputs
No
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
10 - 1200 Hz
Low-Pass Crossover Frequency
30 - 150 Hz
Signal-to-Noise Ratio
>92 dB
Channel Separation
>80 dB
Bass Boost
0 - 9 dB
Remote bass/level controller
No
Fuse Rating
40A x 2 
Strappable
No
Sonic Certified Amplifier
Not Tested
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

OA800.4

Weight:

10.00lbs

Internal SKU:

oa8004

Internal Product ID:

67853

Product and How-to Videos


  • MB Quart Onyx Amplifiers | New for 2013 OA Series
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews



5 star
78%
4 star
17%
3 star
5%
2 star
0%
1 star
0%



Durability
4.7
Value
5
Features
4.8
Design
4.8
Usability
4.7

Customer Reviews

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Great amp!

This amp is fantastic! it puts out true rms, very clear on stereo and bridged for sub woofers. i would recommend this to anyone who needs a high power speakers or some subs. it was a bit tricky to set up the channels if you're new to car audio though, but over all, i would buy again. (and i did buy again) i pulled a stupid and wired it to 2 ohm bridged, but somehow it survived it... i love you mb quart.

By Fox on September 17, 2013

31

found this helpful.

Love This Amp!

Installer, competitor, and general bass head and I love this amp. The sound quality is great even with cheaper speakers. Match this up with a great component set, some sound deadener on your doors and you have yourself an impressive set up.

I've owned a few now, end up selling them and starting fresh, love them all.

There are lots of settings with the HPF/LPF and gains, very great to tune.

By Cutty on June 21, 2014

29

found this helpful.

Great Amplifier !

This is a great amplifier. Got it brand new to install my Chevy Cruze along with a pair of Polk Audio component speaker set and a NAR 10" subwoofer. Perfect match !! Power rating are true, strongly recommend to anyone looking for sound quality with enough power.

By Joao S on March 27, 2014

28

found this helpful.

What A beast of on amp and it sounds so clean and can be tuned to all speakers

Use half the amp for a super nice JL and full car door speakers and it sounds super great! Im Impressed!

By Tiburon on July 8, 2014

24

found this helpful.

Very Nice

So far so good. First time owing MBquart for my voice. Gotta say its a rock solid amp. Clean signal no issues.

By daniel on September 9, 2014

25

found this helpful.

EXCELLENT PRODUCT

I installed this amp in a Suzuki Swift with 4 MB Quart speakers. The sound is brilliant! The products are excellent value for money and perform exactly as specified. Would recommend this to anyone.

By SPAMELOPE on September 17, 2013

24

found this helpful.

Awesome amp

i have channels 1 and 2 powering 2 sets of Alpine SPR-60Cs and channels 3 and 4 powering one set!! i have this amp tuned with the DD-1 and CC-1 they play from 71hz and up subs play 71hz and down!! so far i love the amp every thing sounds awesome and clean!

By mike on November 9, 2014

22

found this helpful.

Great product

Product of good construction however is produced in china as we thought it would be an American product. But the quality is very good.

By MARCOS on April 2, 2014

20

found this helpful.

VERY powerfull

This is a very powerfull amp for the price cant beat it. I have two of them and love them.. Have them powering 4 6.5s 4 8s and 4 super tweets still needa add more mids..

By Brad on July 16, 2014

17

found this helpful.

Great Product

Great value, good output and sound quality. Gets a bit warm when played at full power but can be fixed with a fan or two. Wire terminals are angled down so are a bit awkward to input your wires. All in all, great amp for the price

By Brian on March 2, 2015

14

found this helpful.

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