Hifonics ZRX600.4 Zeus Series 600W 4-Channel Car Amplifier

Hifonics Zeus ZRX600.4

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

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

• 4 ohms: 75 watts x 4-Chan.
• 2 ohms: 150 watts x 4-Chan.
• Bridged, 4 ohm: 300 watts x 2 chan.
• Pulse Width Modulated MOSFET power supply

Good news and a little bad...

This item has been discontinued

But you may be interested in the newest model that's available.

zrx6164 thumbnail

Hifonics Zeus ZRX616.4

OUR PRICE: $89.99

View item

Authorized dealer

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 ZRX616.4 thumbnail
(newest, current model)
Hifonics ZRX600.4 thumbnail
(previous model, replaced by Hifonics Zeus ZRX616.4)
Hifonics ZXi80.4 thumbnail
(previous model, replaced by Hifonics Zeus 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
75 watts x 4 channels
RMS Power @ 2 ohms
150 watts x 4 channels
Bridged RMS Power
300 watts x 2 channels
Power Specifications - Full Range Channels
Peak Power @ 4 ohms
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Bridged Peak/Max Power
Power Specifications - Subwoofer Channel
Peak Power @ 4 ohm
Peak Power @ 2 ohms
Peak Power @ 1 ohm
Amplifier Specifications
Amplifier Series
Zeus (Hifonics)
Marine Certified
Amplifier Class
Number of Channels
Total Peak Power Output
600 watts
Total RMS Power Output
300 watts
Maximum Input Gauge Size
Minimum Impedance Unbridged
2 ohms
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
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
90 dB
Bass Boost
0 - 12 dB
Bass/Gain Remote
Fan Cooled
Fuse Rating
30A x 2 
Total Fuse Rating
CEA-2006 Compliant
Sonic Certified Amplifier
Amp Bluetooth Connectivity
Hi-Res Certified
Authorized Dealer
Authorized Dealer
What is in the box?
WITB: Amplifiers
Other Accessory #1
Other Accessory #2
Other Accessory #3
Other Accessory #4
Other Accessory #5
Specials with this Item
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Hifonics Zeus ZRX600.4

Hifonics Zeus ZRX600.4



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Overall rating distribution

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By feature average rating



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


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December 22, 2014

Amazing sound!

I have this amp running two infinity kappa 2ohm 6.5s in the front and 2 5.25 Rockford 4ohm speakers in the back, and they get loud! I am very pleased with this set up!


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May 25, 2013

Great power supply!

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!


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April 26, 2012

Awesome amp

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


found this helpful.


April 21, 2014

Great amp for mids and highs

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.


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March 21, 2014

This is great!!!!

This amp is awesome it works great in my avalanche


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October 6, 2014


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


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September 27, 2014

Great product if it works

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


found this helpful.


October 20, 2014

Great little amp

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....


found this helpful.

Caddy on 8s

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


found this helpful.


July 10, 2012

Sounds good

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.


found this helpful.


April 30, 2012

Hifonics ZRX600.4!!!

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.


found this helpful.


January 4, 2014

good review

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.


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September 22, 2013

Clean sound!

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.


found this helpful.


November 7, 2012

Never had this brand and wanted to try

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


found this helpful.

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


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