Hifonics HFi55.4 (HFi 55.4) Class D Monoblock Car Amplifier/Amp

Hifonics HFi55.4

440W RMS, 4-Channel HFi Series Amplifier (HFi 55.4)

HFi Series 4-Channel Class A/B Car Amplifier • 110W x 4-Chan. @ 2 Ohms • 55W x 4-Chan. @ 4 Ohms • Tri-Mode Speaker Operation • 4-Way System Protection Circuitry • Preamp RCA Outputs • Blue Illuminated Hifonics Badge

We apologize

This item has been discontinued

DESCRIPTION
Hifonics

Authorized dealer

Retro Look with New Design

The Hifonics HFi55.4 informs you of its main objective in the name, Hi-Fi audio. High end sound processing is the designs main focus, however it continues to bring value to the table by providing high power output in an pleasantly small chassis. The illuminating retro Hifonics logo brings an old-school look back into a new series.

This four channel HFi series amplifier integrates Pulse Width Modulated MOSFET power supplies to allow for affordable power, while causing minimal draw on your cars electrical system. Its bridging options allow bridging from their 4 channel down to 3 channels. This allows the amplifier to drive a bridged channel for a sub, and two unbridged channels for normal output for components such as door speakers. The bridging options also allow for bridging to two separate dedicated channels, to allow for high output to subwoofers, or high powered components.

This incredible power output is combined with the HFi series of amplifiers integrated high-dissipation heat-sink design, and built-in system diagnostics. Affordability does not have to sacrifice value or sound quality – making the HFi55.4 multi-channels the perfect choice.

  • HFi Series 4-Channel Class A/B Car Amplifier
  • RMS Power Rating:
    • 4 ohms: 55 watts x 4 chan.
    • 2 ohms: 110 watts x 4 chan.
    • Bridged, 4 ohms: 220 watts x 2 chan.
  • Pulse Width Modulated (PWM) MOSFET power supply
  • LED power (blue) and protect (red) indicators
  • Variable Bass Boost (0 to +12 dB bass boost at 45 Hz)
  • Blue illuminated Hifonics badge
  • Soft start sound function
  • 4/3/2 channel operation
  • Preamp RCA outputs to daisy chain multiple amps
  • 4-Way System Protection circuitry (thermal, overload, DC, and speaker short protection)
  • Tri-mode speaker operation
  • Heavy duty aluminum alloy vented heatsink for maximum heat dissipation
  • Silver nickle-plated RCA level inputs
  • Silver nickle-plated screw terminals
  • Input sensitivity:
    • Variable level: 200mV-6V
  • Variable high-pass filter (60-12,000 Hz, 12 dB/octave)
  • Variable low-pass filter (30-250 Hz, 12 dB/octave)
  • Damping factor: >180
  • Frequency response: 30-12,000 Hz
  • Dimensions: 13-1/2"L x 8-13/16"W x 2-7/16"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

Product history:

Hifonics HFi55.4 thumbnail
(newest, current model)
Hifonics TXi4408 thumbnail
(previous model, replaced by Hifonics HFi55.4)
Hifonics TXi4406 thumbnail
(previous model, replaced by Hifonics TXi 4408)
FEATURES & SPECS
Power Specifications - Full Range Channels
RMS Power @ 4 ohms
55 watts x 4 channels
RMS Power @ 2 ohms
110 watts x 4 channels
Bridged RMS Power
220 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
Marine Certified
Amplifier Class
AB
Number of Channels
4
Total RMS Power Output
440 watts
Maximum Input Gauge Size
4 AWG
Minimum Impedance Unbridged
2 ohms
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)
Full (AP)
High-Pass Crossover Frequency
60 - 12,000 Hz
Low-Pass Crossover Frequency
30 - 250 Hz
Signal-to-Noise Ratio
90 dB
Channel Separation
80 dB
Bass Boost
0 - 12 dB
Bass/Gain Remote
No
Fan Cooled
No
Fuse Rating
25A x 2 
Total Fuse Rating
Strappable
CEA-2006 Compliant
No
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
Paperwork
Specials with this Item
Deals
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer
VIDEOS AND HOW - TO
REVIEWS
Hifonics HFi55.4

Hifonics HFi55.4

4.5

(15)

Write a review

Overall rating distribution

5 star
67%
4 star
27%
3 star
0%
2 star
7%
1 star
0%

By feature average rating

Durability
4.4
Value
4.8
Features
4.6
Design
4.9
Usability
5

louis

September 6, 2010

great amp!

powerful, and dependable, highly recommend.

9

found this helpful.

Tom

April 19, 2011

Good sound but not really enough amp to push sub

The amp I got had great mids and highs 234 channel switch was broken I would recommend this amp to push 4 Fosgate 6x9 punch speakers or something like that not a sub Maxxsonics says power uprated 20 percent broken switch prob. A fluke if u want old school Hifonics take a pass on hf series go Zeus or Brutus depending on your wants

7

found this helpful.

David

December 10, 2011

Great amp for the price..

I never thought about using the Hifonics amps in a custom installation but I will tell you if you are on a budget and are looking for a quality product this is the amp for you. I resently installed a custom system in a customers truck with this amp and it sounds way better then I ever thought it would. I hooked 8 sets of 3/4" soft dome RF tweeters to this amp and it handles the task with-out getting hot or clipping. It also shows well if you are doing a show quality system as well.

6

found this helpful.

PapaDuck

September 20, 2011

Great Amp! Highly Recommended

I was told these amps were the lower end amps, but I got it because of the price and I'm stubborn and I don't regret it one bit, it looks cool because it lights up. My highs sound so much better, very reasonable price, and never gets hot. If you are looking for a cheap amp but still good quality go with this amp.

6

found this helpful.

kicker man

June 12, 2012

Horrible amp

This amp is horrible spend the extra $20 on the brutus line trust me its worth it due to the cea compliance (true wattage)

5

found this helpful.

Rick

April 14, 2011

Hifonics HFi55.4

Unbelievable amp for the price, it blows you away. Highly recommended

5

found this helpful.

Chris

April 26, 2010

great amp!

Great amp. Design is nice. The HF lights up blue.. very nice amp.. great power for mid/highs.

6

found this helpful.

Micheal

December 28, 2011

Great price

I recommend this amp to everyone its cheap and it gets the job more than done. It's made cheap but for the price can you complain? Don't let that fool you the shell is only cheap the guts are good stuff it really does what it says actually a little more.

5

found this helpful.

cody

December 17, 2011

amazing

I love this amp! I have it hooked up to 4 hifonics zeus 6.5 components. This amp runs them with alot of bass, and highs with great clarity. Of all the 4 channel amps i have owned this one is the best by far. In my opiniopn it is just the exact right amount of power for your mids and highs. It looks so cool when its on and lit up. Cannot beat the price anywhere. Some people say hifonics is lower/ mid grade stuff. Well, I believe their amps at least are top notch. Best price by far and i cant say it enough.

4

found this helpful.

Clifford

October 25, 2011

Awesome Amp!!!!!

This amp is easy to hookup. Easy to set. Amp produce power and clear for sound. Awesome amp and great price. Highly recommend to buy.

4

found this helpful.

pat

October 23, 2011

My system

I have this amp powering a pair of Kappa 682.9cf and Reference 9633cf by infinity and it sounds great, the speakers get more than enough power and the amp doesn't heat up.

4

found this helpful.

Daryl

September 13, 2011

Nice Amp!!

You can't beat this amp for the price!!! This amp is made by the same company that makes MB QUART!!

5

found this helpful.

Made In The CSA

September 10, 2011

Good amp maybe

I have this amp running four Hifonics Zeus ZXi 683 (85 watts rms @ 4 ohms) it does good under moderate load but if you crank it up the amp heats up and sounds washy. I still have to play around with a fan and other things to see if it helps but was shocked that it heated up so fast in a well ventalated area. also not sure if I lost a channel of if a wife got jacked but I only have three speakers working right now.

4

found this helpful.

Troy

July 13, 2011

nice amp

Running in 3 ch mode driving frt speakers and a sub. Works great For my needs.

4

found this helpful.

Bob

June 20, 2011

Hi on Hifonics

Once again Hifonics has delivered what they have advertised. This is my 3rd Hifonics amp and they have all delivered reliable good performance at a very reasonable price. Will be looking for an other one soon.

3

found this helpful.
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ITEM DETAILS

Manufacturer:

Model Number:

HFi55.4

Weight:

10.00lbs

Internal SKU:

hfi554

Internal Product ID:

22700

Item Added to Cart

440W RMS, 4-Channel HFi Series Amplifier (HFi 55.4)

$129.99

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