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MB Quart REF4.80

640W RMS Reference Series 4-Channel Amplifier

MB Quart
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Reference Series 4-Channel Class A/B Car Amplifier • 640W RMS • 160W x 4-Chan @ 2 Ohm • Variable Bass Boost • Soft Start Turn-on • 4-Way System Protection Circuitry • Preamp RCA Outputs • MOSFET Power Supply

Learn more about the ref480

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This item has been discontinued


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Product Highlights


Reference Series 4-Channel Class A/B Car Amplifier • 640W RMS • 160W x 4-Chan @ 2 Ohm • Variable Bass Boost • Soft Start Turn-on • 4-Way System Protection Circuitry • Preamp RCA Outputs • MOSFET Power Supply

Description


MB Quart brand icon

Authorized dealer

  • Reference Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohm: 80 watts x 4 chan.
    • 2 ohm: 160 watts x 4 chan.
    • Bridged, 4 ohm: 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

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Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
80 watts x 4 channel
RMS Power @ 2 ohms
160 watts x 4 channel
RMS Power @ 1 ohm
Not Stable
Bridged RMS Power
320 watts x 2 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total RMS Power Output
640 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohm
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)
High-Pass Crossover Frequency
15 - 250 Hz
Low-Pass Crossover Frequency
30 - 250 Hz
Signal-to-Noise Ratio
>90 dB
Channel Separation
>80 dB
Bass Boost
0 - 9 dB
Remote bass/level controller
No
Fuse Rating
35A x 2 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

REF4.80

Weight:

8.40lbs

Internal SKU:

ref480

Internal Product ID:

25535

Product and How-to Videos


Customer Ratings & Reviews


MB Quart REF4.80 thumbnail image

5 star
67%
4 star
33%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
4.7
Design
5
Usability
4.7

Customer Reviews

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Amazing build quality

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.

By TC on February 13, 2012

4 found this helpful


very satified

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...

By Stephen on August 6, 2011

4 found this helpful


Excellent amp

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.

By Jacob on February 21, 2012

2 found this helpful




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