Garage
Shop

See all parts that fit your 1981 Eldorado

MB Quart ZA1-640.4

640W 4-Channel Z-Line Series Class SQ A/B Amplifier

MB Quart
Shop all MB Quart
Product videos
highlight-star-icon

• RMS: 80W x 4 @ 4 ohm, 160W x 4 @ 2 ohm, Bridged 320W x 2 @ 4 ohm.
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Top mounted controls for simple setup & adjustment
• Frequency Response: 10 - 45,000 Hz

Learn more about the za16404

We apologize

This item has been discontinued


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

51KSC3504 main

Kicker KSC35 (51KSC3504)

200W Peak (100W RMS) 3.5" KS Series 2 Way Coaxial 4-ohm Speakers

4
-11.11%

$79.99

List price $89.99

Product Highlights


• RMS: 80W x 4 @ 4 ohm, 160W x 4 @ 2 ohm, Bridged 320W x 2 @ 4 ohm.
• Fluid-FETS hand selected insulated MOSFETS
• Q-Stasis preamp stage with wide input range
• Top mounted controls for simple setup & adjustment
• Frequency Response: 10 - 45,000 Hz

Description


MB Quart brand icon

Authorized dealer

Z-Line Series: Designed for Sound Quality

With the Z-Line Series, MB Quart focused not only on creating amplifiers with great output, but with great sound quality as well. The Z-Line Series Amplifiers feature Q-Stasis pre-amp technology, Class SQ A/B and Class Q1 proprietary class D topology, and Fluid-FETS outputs all utilized to deliver high end quality.

Q-Stasis Pre-Amps

Keeps noise from source units at near immeasurable levels to improve sound quality.


Class SQ A/B

Paired with Q-Stasis, the amplifier exceeds the sonic accuracy and clarity of standard A/B Amplifiers.


Class Q1

Keeps distortion low and maintains a musical signal by utilizing the efficiency of Class-D engineering.


Fluid-FETS

Produces an efficient power output similar to the quality of many high end home amplifiers.







Sonic Electronix Power Certified Amplifier

The MB Quart ZA1-640.4 4-channel amplifier is a Sonic Electronix Certified Amplifier This amp's power output has been professionally tested with our SMD Amplifier Dyno, bringing you it's true power ratings
Learn more about this amp's Sonic Electronix Certified Power Here!


Impedance
Claimed Output
Dynamic Results
4 Ω
80W @ 14.4V
98W @ 14.18V
2 Ω
160W @ 14.4V
157W @ 14.14V
4 Ω Br.
320W @ 14.4V
313W @ 14.07V



General Features:

  • Z-Line Series 4-Channel Class SQ A/B 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.
  • Sonic Electronix Certified Power Rating*:
    • 4 ohm: 98 watts x 4 chan.
    • 2 ohm: 157watts x 4 chan.
    • Bridged 4 ohm: 313 watts x 2 chan.
  • Fluid-FETS hand selected insulated MOSFETS
  • Focused mass heat sink designs
  • Q-Stasis preamp stage with wide input range
  • Top mounted controls for simple setup & adjustment
  • Elaborate preamplifier with extended control
  • Easy access mounting tabs for a secure install
  • LED power (green) and protect (red) indicators
  • Selectable 2Ch/3Ch/4Ch Modes
  • Selectable HPF/LPF /Full Crossover Settings
  • Input sensitivity: 200mV - 6V
  • Frequency Response: 10 - 45,000 Hz
  • Signal to Noise Ratio: >90
  • Total Harmonic Distortion (THD): <0.5%
  • Variable Bass Boost: 0 to +12dB bass boost at 45Hz
  • Variable low-pass filter: 30- 250 Hz
  • Variable high-pass filter: 60 - 13,000 Hz
  • Fuse Rating: 35A x 2
  • CEA-2006 compliant amplifier
  • 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.
  • Dimensions: 9.20"W x 16.50"L x 2.20"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

*The Sonic Electronix Certified Power Ratings listed are based on a test of a specific sample amplifier. Actual power ratings may slightly vary between amps.


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

Club 522F main

JBL Club 522F (SPKCB522FAM)

270W Peak (90W RMS) 5.25" Club Series 2 Way Coaxial 3-ohm Speakers

-42.29%

$74.99

List price $129.95

Club 620F main

JBL Club 620F (SPKCB620FAM)

330W Peak (110W RMS) 6.5" Club Series 2-way 3-ohm Shallow Mount Coaxial Car Speakers

2
-38.48%

$79.95

List price $129.95


Best selling similar products

VADM4v2 small

NVX VADM4 v2 (VADM4v2)

• 80 watts x 4 channel @ 4 ohm
• 125 watts x 4 channel @ 2 ohm
• Bridged: 250 watts x 2 channel @ 4 ohm
• Total RMS Power: 500 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(41)

$209.99

List price $239.99

NDA6004 small

NVX NDA6004

• 100 watts x 4 channel @ 4 ohm
• 160 watts x 4 channel @ 2 ohm
• Bridged: 320 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(14)

$159.99

List price $215.99

MFA 4.220 small

Deaf Bonce MFA 4.220

• 220 watts x 4 channel @ 4 ohm
• 330 watts x 4 channel @ 2 ohm
• Bridged: 660 watts x 2 channel @ 4 ohm
• Total RMS Power: 1320 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$289.90

List price $289.90

RD400/4 small

JL Audio RD400/4

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(28)

$379.99

List price $379.99

MFA 4.180 small

Deaf Bonce MFA 4.180

• 180 watts x 4 channel @ 4 ohm
• 270 watts x 4 channel @ 2 ohm
• Bridged: 540 watts x 2 channel @ 4 ohm
• Total RMS Power: 1080 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$259.90

List price $259.90

JD400/4 small

JL Audio JD400/4

• 75 watts x 4 channel @ 4 ohm
• 100 watts x 4 channel @ 2 ohm
• Bridged: 200 watts x 2 channel @ 4 ohm
• Total RMS Power: 400 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(34)

$299.99

List price $299.99

VAD10004v2 small

NVX VAD10004 v2 (VAD10004v2)

• 150 watts x 4 channel @ 4 ohm
• 250 watts x 4 channel @ 2 ohm
• Bridged: 500 watts x 2 channel @ 4 ohm
• Total RMS Power: 1000 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(24)

$279.99

List price $335.99

MVPA4 small

NVX MVPA4

• 100 watts x 4 channel @ 4 ohm
• 150 watts x 4 channel @ 2 ohm
• Bridged: 300 watts x 2 channel @ 4 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable 4-Channel Amplifier

(70)

$279.99

List price $383.99

AP200/4BT small

JL Audio AP200/4BT

• 40 watts x 4 channel @ 4 ohm
• 50 watts x 4 channel @ 2 ohm
• Bridged: 100 watts x 4 channel @ 4 ohm
• Total RMS Power: 200 watts
• Class D 2 ohm Stable 4-Channel Amplifier

$549.99

List price $659.99

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
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
160 watts x 4 channel
Peak Power @ 2 ohms
320 watts x 4 channel
Bridged Peak/Max Power
640 watts x 2 channel
Amplifier Specifications
Series
Z-Line Series
Amplifier Class
A/B
Number of Channels
4-Channel
Total Peak Power Output
1280 watts
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
<0.5%
Speaker Level Inputs
No
Preamp Outputs
No
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
60 - 13,000 Hz
Low-Pass Crossover Frequency
30 - 250 Hz
Signal-to-Noise Ratio
>90 dB
Bass Boost
0 - 12 dB
Remote bass/level controller
No
Fuse Rating
35A x 2 
Strappable
No
Sonic Certified Amplifier
Yes
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

ZA1-640.4

Weight:

10.00lbs

Internal SKU:

za16404

Internal Product ID:

94882

Product and How-to Videos


  • MB Quart Z-Line Series Car Amplifiers | Product Overview
  • How To Install an Amplifier: Car Amplifier Basics Part 2

Customer Ratings & Reviews


MB Quart  ZA1-640.4 thumbnail image

5 star
0%
4 star
100%
3 star
0%
2 star
0%
1 star
0%



Durability
4
Value
5
Features
4
Design
4
Usability
5

Customer Reviews

Sort by:

Loading...

Great Amp

This MB Quart amp is a great amp... It puts out the power that is stated and the sound is clear... Installation is simple and the controls on the top off the amp make it a snap to make adjustments...

By Terry on May 11, 2015 Checkmark Icon Verified purchase

13 found this helpful




DTR1.1400D small

Soundstream DTR1.1400D R/B

1400W RMS, Monoblock D-Tower Series Amplifier

$199.99

List price $369.99

Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1998 Audi A6

1981 Cadillac Eldorado

1982 Audi 5000

2011 Audi Q5

2003 Lincoln LS

1985 Mercury Cougar

2014 Audi TT

2015 Lexus RX450h

2011 Ford Edge

2011 Ram 2500

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

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.