Refurbished - MB Quart RA640.4 Reference Series 640W 4-Channel Amplifier

by MB Quart

About
Specs & Details
Product Videos
Reviews
Add-ons
Recently Viewed
Related Searches

MB Quart RA640.4 (Factory Refurbished) Image 1 — MB Quart RA640.4 (Factory Refurbished)

MB Quart RA640.4 (Factory Refurbished) Image 2 — MB Quart RA640.4 (Factory Refurbished)

MB Quart RA640.4 (Factory Refurbished) Image 3 — MB Quart RA640.4 (Factory Refurbished)

MB Quart RA640.4 (Factory Refurbished) Image 4 — MB Quart RA640.4 (Factory Refurbished)

MB Quart RA640.4 (Factory Refurbished) Image 5 — MB Quart RA640.4 (Factory Refurbished)

MB Quart RA640.4 (Factory Refurbished) Image 6 — MB Quart RA640.4 (Factory Refurbished)

MB Quart RA640.4 (Factory Refurbished)-video

Product videos

Product highlights

• Item Condition: Factory Refurbished
• 80W x 4-Chan. @ 4 ohm
• 160W x 4-Chan. @ 2 ohm
• 320W x 2 Chan. @ 4 ohm
• 3-Way System Protection
• 4/3/2/1 Channel Operation
• 4 Gauge Power and Ground Inputs
• FLUID-FETS Circuit for Smooth Sound Quality

Learn more about the LS-ra6404-RB

Product Highlights

Description

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.

Item Condition: Factory Refurbished

General Features:

Reference Series 4-Channel Class SQ Car Amplifier
Max Power Rating:

4 ohm: 80 watts x 4 chan.
2 ohm: 160 watts x 4 chan.
Bridged, 4 ohm: 320 watts x 2 chan.

FLUID-FETS MOSFET Circuit maximizing power efficiency while improving sound quality
LED power (green) and protect (red) indicators
Variable Bass Boost (0 to +12 dB bass boost)
Built-in system diagnostics and top-mounted controls
4/3/2/1 Channel operation
Preamp RCA outputs to daisy chain multiple amps
3-way protection circuitry (thermal, overload, and speaker short protection)
Black reference aluminum alloy heat-sink with illuminated MB Quart design
Input sensitivity:

Level: 200mV-6V

Variable high-pass filter (60-13,000 Hz)
Variable low-pass filter (30-250 Hz)
Frequency response: 30-45,000 Hz
4 gauge power and ground wiring is required for installation. Contact us for information regarding a discount on select amplifier kits from our website when purchased together with this amplifier.
Dimensions: 8-1/4"W x 15-1/2"D x 2-3/8"H
Authorized Internet Dealer
90-Day Manufacturer's Warranty

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

Bridged RMS Power

320 watts x 2 channel

Amplifier Specifications

Series

Reference Series

Amplifier Class

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

Preamp Outputs

Built-in Crossover

Low-Pass (LP)
High-Pass (HP)

High-Pass Crossover Frequency

60 - 13000 Hz

Low-Pass Crossover Frequency

30 - 250 Hz

Signal-to-Noise Ratio

92 dB

Channel Separation

80 dB

Bass Boost

0 - 12 dB

Remote bass/level controller

Fuse Rating

30A x 3

Strappable

Warranty and Return Policy

Parts Warranty Duration

90 days

Labor Warranty Duration

90 days

Warranty Provider

Manufacturer

Customer Ratings & Reviews

MB Quart RA640.4 (Factory Refurbished) thumbnail image

Overall rating distribution

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

Filter by Star Rating

Show only Verified Purchases

By feature average rating

Durability		0
Value		0
Features		0
Design		0
Usability		0

Customer Reviews

Sort by:

Sorry, no reviews found

Add-ons

Belva BAK44

Complete 4-Channel CCA 4 Gauge Amp Kit with RCA Cables and Speaker Wire

(61)

$49.99

List price $79.99

Subscribe

Welcome to the Team!

MB Quart RA640.4 (Factory Refurbished)

We apologize

This item has been discontinued

Product Highlights

Description

Item Condition: Factory Refurbished

General Features:

Specifications & Details

Item Details

Product and How-to Videos

Customer Ratings & Reviews

Customer Reviews

Related Searches

Are you sure you want to clear your garage?

This page was not designed for products.

Didn't find your car?

Account

Shopping help

Company

Everyday heroes

Brand stores

Useful links