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MB Quart OA500.1 (Factory Refurbished)

500W Onyx Series Class AB 1-Channel Monoblock Amplifier

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• 250 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• Frequency Response: 10 - 300 Hz
• Wired remote bass level control included
• Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
• Dimensions: 9.45" W x 11.81" L x 2.23" H

Learn more about the LS-oa5001-RB

We apologize

This item has been discontinued

Product Highlights


• 250 Watts RMS x 1 @ 4 ohm
• 500 Watts RMS x 1 @ 2 ohm
• Frequency Response: 10 - 300 Hz
• Wired remote bass level control included
• Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
• Dimensions: 9.45" W x 11.81" L x 2.23" H

Description


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Authorized dealer

Item Condition - Refurbished:

A manufacturer refurbished product will function like new with all parts inspected or replaced as necessary. There may be slight cosmetic issues such as scratches or similar. See the description for additional details.

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 Class AB Monoblock Amplifier
  • RMS Power Rating:
    • 4 ohm: 250 watts x 1 chan.
    • 2 ohm: 500 watts x 1 chan.
  • FLUID-FETS MOSFET Circuit maximizing power efficiency while improving sound quality
  • Wired remote bass level control included
  • LED power (green) and protect (red) indicators
  • Soft start turn-on
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Dual speaker terminals simplify the hookup of multiple speakers
  • Heavy duty aluminum alloy heat-sink
  • Input sensitivity: 200mV - 6V
  • Frequency Response: 10 - 300 Hz
  • Total Harmonic Distortion (THD): 0.05%
  • Signal to Noise Ration: >92 dB
  • Variable low-pass filter: 40 - 300 Hz
  • Subsonic filter: 10 - 40 Hz
  • Variable Bass Boost: 0 to +12 dB bass boost at 45 Hz
  • Fuse Rating: 25 A x 2
  • 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.
  • Dimensions: 9.45"W x 11.81"L x 2.23"H
  • Authorized Internet Dealer
  • 90 Day Sonic Electronix Warranty
Check out the Onyx Series Owner's Manual

Specifications & Details


Power Specifications - Subwoofer Channel
RMS Power @ 4 ohms
250 watts x 1 channel
RMS Power @ 2 ohms
500 watts x 1 channel
RMS Power @ 1 ohm
Not Stable
Amplifier Specifications
Series
ONYX Series
Amplifier Class
A/B
Number of Channels
1 - Mono
Total RMS Power Output
500 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
Not Bridgeable
THD at Rated RMS Power
0.05%
Speaker Level Inputs
No
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
Subsonic
Low-Pass Crossover Frequency
40 - 300 Hz
Subsonic Filter
10 - 40 Hz
Signal-to-Noise Ratio
>92 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
Yes
Fuse Rating
25A x 2 
Strappable
No
Warranty and Return Policy
Parts Warranty Duration
90 days
Labor Warranty Duration
90 days
Warranty Provider
Sonic Electronix

Item Details


Manufacturer:

Model Number:

OA500.1-RB

Weight:

8.50lbs

Internal SKU:

LS-oa5001-RB

Internal Product ID:

100125

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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.