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Hifonics ZRX600.4

600W 4-Channel Class A/B Zeus Series Car Amplifier

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List price $229.99

You Save: $144.00 (62.61%)

$85.99

with warranty

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Order within 55 hrs 33 mins to ship 11/24

Arrives by Wednesday, Nov. 26 to zip 20147

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General Features:

  • 4-Channel Class A/B Zeus Series Car Amplifier
  • Max Power Rating:
    • 4 ohms: 75 watts x 4 chan.
    • 2 ohms: 150 watts x 4 chan.
    • Bridged, 4 ohm: 300 watts x 2 chan.
  • Simpatico coil design (SPC) Ultra-Fi Pulse Width Modulated MOSFET power supply
  • LED power (green) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Soft start turn-on
  • 4/3/2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 3-way protection circuitry (thermal, overload, and speaker short protection)
  • Heavy duty aluminum alloy heat-sink for heat dissipation
  • Nickel-plated RCA level inputs
  • Nickel-plated screw terminals
  • Variable high-pass filter (60-13000 Hz, 24 dB/octave)
  • Variable low-pass filter (30-250 Hz, 24 dB/octave)
  • Frequency response: 10-45000 Hz
  • 8 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: 13-2/3"L x 10"W x 2-1/3"H
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Product History:

Hifonics ZRX600.4 thumbnail
(newest, current model)
Hifonics ZXi80.4 thumbnail
(previous model, replaced by Hifonics ZRX600.4)
Hifonics ZXi4410 thumbnail
(previous model, replaced by Hifonics Zeus ZXi80.4)
Hifonics ZXi4408 thumbnail
(previous model, replaced by Hifonics ZXi 4410)
Hifonics ZXi4406 thumbnail
(previous model, replaced by Hifonics ZXi 4408)
Hifonics ZX4400 thumbnail
(previous model, replaced by Hifonics ZXi 4406)

Power Specifications - Full Range Channels

RMS Power @ 4 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 4 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

75 watts x 4 channels
RMS Power @ 2 ohms

The RMS power rating is the measure of continuous power that an amplifier can output, or a speaker can handle. It is the most accurate depiction of real, continuous power that the industry has so far.

If the final impedance of your speakers or subwoofers equals 2 ohms, this is how much power this amplifier will supply at that ohm level. The higher the RMS wattage, the more clean and loud your music will sound.

150 watts x 4 channels
Bridged RMS Power

Bridging refers to combining two channels on an amplifier to create one channel with double the voltage and an increased power output. A 2-channel amplifier will bridge down to 1-channel and a 4-channel amplifier can bridge to create 2-channels. An amplifier is most commonly bridged to drive a subwoofer.

Remember, once you bridge two channels down to one its final impedance will be 4 ohms unless otherwise specified. This rating lists the RMS power created once an amplifier is bridged.

300 watts x 2 channels
Peak Power Output
This form of power rating refers to the maximum amount of power an electronic device can handle or output in an instant without damage occurring. Often times this maximum is achieved during a brief musical burst, such as a drum accent, or low bass hit.

Some manufacturers display peak power ratings on the face of their products to increase the appeal to consumers. The RMS power rating is more accurate, and we recommend using it for product comparison.

300 watts x 2 channels

Amplifier Specifications

Amplifier Series
This designates the series of the amplifier. Many amps are available in a litany of different wattage and channel configurations, but maintain consistent features throughout the product line.
Zeus (Hifonics)
Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

AB
Number of Channels
Each channel on an amplifier will power one speaker using a positive and negative cable. There are various types of amplifiers, each designed to power a certain number of speakers. Monoblock amplifiers, also known as single channel, are designed to power one or more subwoofers. These amplifiers often have very high power ratings. On the other hand, multi-channel amplifiers power multiple speakers, usually at lower power ratings. 2-Channel and 4-Channel amplifiers can power car speakers or low powered subwoofers. Occasionally you might see a 5 or 6-channel amplifier that can power speakers and subwoofers at the same time. The most common setup is a monoblock amp to run subwoofers and a 4-channel amp to run door speakers. Check out our Knowledge Base for more information.
4
Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

600 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

300 watts
Maximum Input Gauge Size
This is the largest gauge wire that will fit into the power and ground terminals of this device. The lower the gauge number, the thicker the wire is. For example, a 4 gauge wire is thicker than an 8 gauge wire and thus has higher current carrying capacity. Always do your best to get this size wire to reduce the risk of damage to your components.
8 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 ohms
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
4 ohms
THD at Rated RMS Power
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
.05%
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-pass (LP)
High-pass (HP)
High-Pass Crossover Frequency
The high-pass crossover frequency can be a fixed crossover point or a variable crossover range. A variable high-pass crossover allows you to select a specific crossover point which allows frequencies above the set crossover point to pass, while making frequencies below the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

60 - 13000 Hz
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

30 - 250 Hz
Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
90 dB
Bass Boost
The objective of the bass boost is to get more kick out of your subwoofer. It is a circuit that emphasizes the lower frequencies at a given point. The bass boost should always be set first before setting the gain. This feature is known for destroying subwoofers and is commonly used incorrectly, so be cautious.
0 - 12 dB
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.
No
Fan Cooled
A great feature to have if an amp generates a large amount of heat. Cooling fans can help regulate the temperature to prevent the amp from overheating (burning).
No
Fuse Rating
The amperage and the number of fuse(s) an amp requires.
30A x 2 
CEA-2006 Compliant
Amplifiers that have been tested to meet specific standards. When a car amplifier meets these standards, you can be sure that it will be able to produce the amount of power specified by the official CEA-2006 rating. Usually, these rating consist of the following items:
  • RMS Power
  • Signal-to-Noise Ratio

This rating applies to both external car amplifiers, as well as the amplifiers inside of in-dash stereos.

No

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
60%
4 Star
40%
3 Star
0%
2 Star
0%
1 Star
0%

Average Attribution Rating

Durability
4.4
Value
4.7
Features
4.8
Design
4.6
Usability
4.8
Manuel

Highlands Ranch, CO

Overall
Durability
Value
Features
Design
Usability
Great little amp

October 20, 2014

At first I thought it was going to be a little cheap compare to other amps but I was very surprised. Right now I am loving it and the best part is the price was awesome....

0 of 0 found this helpful

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Corey

King, NC

Overall
Durability
Value
Features
Design
Usability
Amp

October 6, 2014

Good price, decent amp. Little cheap made but gets it done.

0 of 0 found this helpful

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Rokie

Canyon Country, CA

Overall
Durability
Value
Features
Design
Usability
Great product if it works

September 27, 2014

This will have been the second one I have purchased. I purchase one about a year and a half ago it worked great for about three months and the one channel started intermittantly going out it took about another three months to trouble shoot the problem. When finally everything pointed to the amplifier I replaced it with the same one to prevent changing connections so far prolem solved and working great as I said great product when it works

0 of 0 found this helpful

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shaniac

Glenpool, OK

Overall
Durability
Value
Features
Design
Usability
Impressed...

May 12, 2014

I bought this to run the new kicker LED speakers, 4 of them in our boat. it's not a marine amp but I installed it off the floor on some bushings and under our helm. I was amazed that an amp that cheap could sound that good. I was very skeptical! Plenty of power and it just so happened to light up with matching blue LED in my boat! Never felt warm to the touch during use.

Pro's: excellent price, provides plenty of power to run 4- 6.5" speakers.
Looks awesome lit up. I even got a price match!

Con's: little bigger than I thought

0 of 0 found this helpful

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Caddy on 8s

Hayward

Overall
Durability
Value
Features
Design
Usability
Screamin

May 4, 2014

I bought this amp for my 6.5 coaxial speakers and it was a night and day difference. Cant beat the price of hifonics amps

0 of 0 found this helpful

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Cmc

Royse City, TX

Overall
Durability
Value
Features
Design
Usability
Great amp for mids and highs

April 21, 2014

This is the amp to buy for mids and highs. I have it on four 5x7's and it rocks them way better than I thought it would. The price of this amp is very low for what you get. I have had way more expensive amps that haven't preformed as well as this one. Great buy for sure.

0 of 0 found this helpful

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Hugo

Portland, TX

Overall
Durability
Value
Features
Design
Usability
This is great!!!!

March 21, 2014

This amp is awesome it works great in my avalanche

0 of 0 found this helpful

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burl

cochran, GA

Overall
Durability
Value
Features
Design
Usability
good review

January 4, 2014

ok so I bought this for myself for x-mas but the wife made me wrap it and keep it under the tree.so long story short I hade it for over a month before I even got to play with it. I have it in a 98 jeep wrangler it makes my kicker 6 1/2 scream I can now hear my music even without the top on my jeep. for the price I do not think I could have gotten a better amp I will recommend this to all my friends.

update I rated durability so low because I just got it hooked up and I do not know how long it will keep working.

0 of 0 found this helpful

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zxxflyer

GA

Overall
Durability
Value
Features
Design
Usability
Clean sound!

September 22, 2013

I have been using Hifonics amps for over 10 years. They are still built well and deliver clean sound. Sonic always ships fast and the items are well protected.

0 of 0 found this helpful

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MazdaSpeed3

long island, NY

Overall
Durability
Value
Features
Design
Usability
Great power supply!

May 25, 2013

People trash talk hifonics saying they're not as they used to be but i beg to differ.Every company except one or two make their products overseas and this is to make the product more affordable for us, unfortunately quality can suffer, but thankfully this amp doesn't fall into this category.
I have three amps currently in my car, one sub, 12 other speakers including tweeters. The zrx 600.4 replaced the 6/7 year old jbl gt75.4 i had because i wanted something smaller, more efficient with a new school, power efficient power supply for a reasonable price. Compared this amp to my rockford fosgate amps and i think those would win basically because the new rf amps are the best products they've made in a long long time. The sound quality is good, not great, but i know my speakers have way more clean power going to them now since they sound totally different.Mmids are louder, highsare cleaner and the amps mounted in my spare tire well, held down with velcro but ive read thats a good cool place to mount an amp. No problem except slight whining noise either from an old rca, the gain being too high or maybe crossed wires, im fairly certain it's not the amp tho unless gains just up too high. I use my zrx600 to power 6.5" infinity kappa coaxial 100w rms, 6.5" jbl p665 components also handlea nominal 100w (whch btw they bump some amazing mids now, infinitys do too).
I recommend this amp to hifonics loyalists in need of an efficient 4ch amp to power some mid/high end speakers that can handle atleast 80-85 watts,but i bet it could power a couple of 10" kicker comps easily. Ty sonic! As always best deal online, free shipping and good service is a bonus!

0 of 0 found this helpful

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Michael

YakimaYakima, WA

Overall
Durability
Value
Features
Design
Usability
Never had this brand and wanted to try

November 7, 2012

Well first off, I had bought the PA 2300 watt 4-channel, and with in three-four months use it die on me. So I got this Amp and was really surprised at the power and durability of this Amp. It runs my Mid's and Hi's very clearly. Tanks Sonic's

0 of 0 found this helpful

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Rsanche

Tucson, AZ

Overall
Durability
Value
Features
Design
Usability
Good amp

July 30, 2012

This amp makes my door components sound loud and clear, seems to do rated power and has a good nice blue light up logo of the hifonics,
the bad is on my amp it does not light up anymore don't know why though. Also this amp is not good for a small sub since it says 300x2 at 4ohm it just isn't clean bass. would recommend for speakers not for sub woofers.

0 of 0 found this helpful

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oh7pounds

Bellingham, WA

Overall
Durability
Value
Features
Design
Usability
Sounds good

July 10, 2012

Decent amp. Using it to power 4 type r components. The price is right. The sound is clear and loud. No problems so far. I have the Hifonics zrx1500.1 on the way. Will let ya know bout it.

0 of 0 found this helpful

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Rsanchez

Tucson, AZ

Overall
Durability
Value
Features
Design
Usability
Hifonics ZRX600.4!!!

April 30, 2012

Great amp, great look, and small enough for my application, Haven't tested for actual performance if does rated, but good glowing hifonics blue logo, the only thing i did not like is that blue light doesn't work anymore don't know why, but overall good amp. Recommend to anyone.

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Justin

West Babylon, NY

Overall
Durability
Value
Features
Design
Usability
Awesome amp

April 26, 2012

Love it. Amp works to perfection. This will be my second one bought.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added

NVX XKIT84 4-Channel 8-Gauge Wiring Kit

In case you didn't know, NVX has top notch wire and this kit has everything you need!

Your Price $69.99

Maxxlink VPAK-8V3 8-Gauge Wiring Kit

Get a 1 year extended warranty on this amp when you use this kit! Don't forget the RCA's!

Your Price $31.99

Kicker PK8 8-Gauge Wiring Kit

Great wire for your awesome new amp! Don't forget the RCA's!

Your Price $29.95

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

Comes with everything you need to upgrade your power and ground wire.

Your Price $59.99

Kicker Big 3 Package 1/0 Gauge Big 3 Upgrade Kit

Get all you need including wire cutters to upgrade your power and ground wire.

Your Price $151.99

Belva BBG3KT CCA 1/0 Gauge Big Three Kit

Features everything needed to upgrade factory power and ground wire.

Your Price $39.99

Universal Remote Level Bass Control

Controls bass level and frequency via RCA/Interconnect connectors on any amp.

Your Price $7.99

Small Universal Remote Level Bass Control

The Scosche RLC is a smaller universal bass remote that connects via RCA inputs.

Your Price $11.99

StreetWires FB8

8 Gauge Firewall Bushing

Your Price $6.95

NVX XDBU4 - Top of the Line!

Distribution Block with Two 1/0 or 4 AWG Inputs and Four 4 or 8 AWG Outputs

Your Price $17.99

NVX XIV45 4-Channel RCA Audio Interconnect Cable

5 Meters (16.4 ft.) 4-Channel RCA Audio Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $23.99

Kicker K-Series RCA Interconnect Cable

19 ft. of 4-Channel RCA cable with dual twisted-pair conductors, hyper-flex technology, and gold plated contacts for maximum signal transfer!

Your Price $29.95

StreetWires ZN7 RCA Interconnect Cable

16.4 ft. of 4-Channel RCA Cable with hyper twist construction, oxygen free copper, and precision machined tips.

Your Price $59.99

Kicker 4-Channel RCA Audio Interconnect Cable

4 Meters (13 ft.) 4-Channel K-Series RCA Audio Interconnect Cable

Your Price $19.95

NVX XWS1225 12 AWG Speaker Wire

25 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $39.99

NVX XWS1250 Speaker Wire

50 ft. of True 12 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $29.99

NVX XWS1625 16 AWG Speaker Wire

25 ft. of True 16 Gauge 100% Copper EnvyFlex Speaker Cable/Wire

Your Price $13.99

Belva BBSW127 12 AWG Speaker Wire

12 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $14.99

Belva BBSW167 16 AWG Speaker Wire

16 Gauge 7 Meter (23 Ft) Speaker Wire (CCA)

Your Price $12.99

The Install Bay IB-CAP1F

True 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $37.99

e2 ECAP1 by Scosche - Mid-Level 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $49.99

Rockford Fosgate RFC1D - Top of the Line 1 Farad

Digital 1.0 Farad Car Audio Capacitor for up to 1000W Max

Your Price $99.99

SMD DD-1 Distortion Detector

Set the gain of an audio amplifier quickly and accurately

Your Price $149.99

Scosche SPL Meter SPL1000F

Handheld boomSTICK measures your SPL range from 60 to 135 dB

Your Price $21.99

Browse 1 question and 4 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
great buy
kyle s on Nov 6, 2014
recommended by friend
Austin R on Sep 1, 2014
Because I want a little more power in my car.
Steven G on Oct 28, 2014
Hifonics has a great name made for itself
Ben S on Aug 19, 2014

Product Summary

Manufacturer

Model Number

ZRX600.4

UPC

806576218548

Weight

8.00lbs

Internal SKU

zrx6004

Internal Product ID

44493

Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Hifonics ZRX600.4