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

MB Quart REF4.80

640W RMS Reference Series 4-Channel Amplifier

4.7

(3 reviews)

Read 3 reviews

Write a review

The product on this page is discontinued.

Specials with this product

  • Free Ground Shipping to the 48 statesdetails
  • Reference Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 80 watts x 4 chan.
    • 2 ohms: 160 watts x 4 chan.
    • Bridged, 4 ohms: 320 watts x 2 chan.
  • Pulse Width Modulated MOSFET power supply
  • LED power (blue) and protect (red) indicators
  • Variable Bass Boost (0 to +9 dB bass boost at 45 Hz)
  • Soft Start Turn-on
  • 4/3/2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 4-Way System Protection circuitry (DC, thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heatsink for extreme heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Input sensitivity:
    • Level: 200mV-6V
  • Variable high-pass filter (15-250 Hz, 24 dB/octave)
  • Variable low-pass filter (30-250 Hz, 24 dB/octave)
  • Damping factor: >180
  • Frequency response: 15-45,000 Hz
  • Dimensions: 12-3/16"L x 7-3/4"W x 1-7/8"H
  • 4-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 ohms80 watts x 4 channels
RMS Power @ 2 ohms160 watts x 4 channels
RMS Power @ 1 ohmNot Stable
Bridged RMS Power320 watts x 2 channels
Peak Power OutputN/A
Amplifier Specifications
Amplifier ClassAB
Number of Channels4
Total Peak Power OutputN/A
Total RMS Power Output640 watts
Maximum Input Gauge Size4 AWG
Minimum Impedance Unbridged2 ohms
Minimum Impedance Bridged4 ohms
THD at Rated RMS Power<0.05%
Speaker Level InputsNo
Preamp Outputs1 pair
Built-in CrossoverLow-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency15 - 250 Hz
Low-Pass Crossover Frequency30 - 250 Hz
Subsonic FilterN/A
Signal-to-Noise Ratio>90 dB
Channel Separation>80 dB
Bass Boost0 - 9 dB
Bass/Gain RemoteNo
Fan CooledNo
Fuse Rating35A x 2 
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 MB Quart REF4.80
Average Customer Rating is 4.7 out of 5 stars:
4.7
based on 3 Reviews
Share your thoughts with others:
Write a Review
Rating Distribution:
5 star:
.
.
67%
4 star:
.
.
33%
3 star:
.
0%
2 star:
.
0%
1 star:
.
0%
what's this?
Average Attributes Rating:
Durability
5.0
Value
5.0
Features
4.7
Design
5.0
Usability
4.7
what's this?
Most Helpful Customer Reviews:
February 21, 2012 Excellent amp
Review by
Jacob from San Antonio, TX
Overall
Durability
Value
Features
Design
Usability
An independent test verified that these amplifiers are underrated by about 30watts (4ohms). The amount of power is amazing given the size of this amplifier. I use this amplifier to power a set of Hybrid Audio Imagines running active. The sound improved considerably after switching to MB Quart from my older Jensen amplifier. The only possibly concern is cooling. This is a compact relatively high power Class A/B amplifier, so it can get hot. The other time I was on a road trim and put my bags all around the amplifier. It shut down after 15 minutes. This is not a big problem. It needs good air circulation. Just pointing out. Another minor issue is that the power connector will not accept wire bigger than 8gauge.
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
February 13, 2012 Amazing build quality
Review by
TC from Vancouver, bc, Canada
Overall
Durability
Value
Features
Design
Usability
This amp has excellent sound quality, but most importantly it fits under almost any seat as its the thinnest 4 channel amp of any i've found.
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
August 6, 2011 very satified
Review by
Stephen from Santa Clarita, CA
Overall
Durability
Value
Features
Design
Usability
I wanted a clean amp for less money, and i got exaclty that. very nice amp, clean sound, great power for my infinity kappa's. I was leading towards infinity or jbl but, i am glad i did my research and MB Quart came up on top. Very impressed with the specs, Good quality all around. JBL have some high frequency response but, what can you really hear beyond 20,000 anyway. Save your money, you can't go wrong with MB Quart amps. Get yours from sonic before they realize they are selling too low of a price...
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
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: MB Quart
Model number: REF4.80
UPC: 806576217244
Weight: 8.40 lbs
Internal SKU: ref480
Internal product ID: 25535

Why Sonic Electronix?

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

Customer Testimonial

I have ordered twice now from you guys and have not been let down one bit. Every product arrived timely and in perfect shape. Your prices can't be beat and when free shipping is available you have the best deal around. Keep up the good work and keep those prices where they are "rock bottom"!

- James from Citrus Heights, CA

See more…

Recently Viewed Items

ref480 thumbnail

7" Dual Channel IR Headrest Monitor with Ultra Bright LED Backlighting

ref480 thumbnail

6-way DJ Tweeter Box

ref480 thumbnail

iPod/iPhone Connection Cable for Jensen and Phase Linear Compatible Multimedia/DVD Receivers