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Hifonics HFEQ

4-Band Equalizer with 9-Volt Line-Driver and Multiple-Source Signal Processor

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List price $159.99

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$66.99

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HFEQ Features:

  • Half-DIN, 4-Band preamp EQ with front/rear active crossover features
  • Line Driver circuit delivers 9-volts of preamp level signal through the RCA's
  • Audio input selector for switching between headunit and another audio source
  • Input level controls for both the car radio and any media device to insure identical volume levels
  • Master volume control of the SPL-Level for both sound sources
  • Front to rear dual-amp fader
  • 2-Audio inputs with level matching
  • Selectable 12dB high-pass crossover and low-pass sub output
  • Selectable for mono or stereo subwoofer setups
  • 45Hz sub-bass control
  • 120Hz mid-bass control
  • 1-year Manufacturer's warranty

Equalizer Specifications

Equalizer Bands
The number of graphic or parametric equalizer bands the receiver has. The better the EQ, the more likely you will be able to "tweak" your sounds to your desire.
4 band
Equalizer Frequencies
The frequency range that allows control of the center frequency of each equalization band.
45 - 12000 Hz
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)
Built-in Bass Reconstruction
Bass reconstructors, or bass enhancers, improve low frequency reproduction in a car audio system with at least one subwoofer. These bass expander products will help your subs produce accurate bass thumps.
No
Line Driver
A line driver is a small amplifier used to support the strength of the audio signal coming from the source unit.
Yes
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
No
Total Number of Inputs
This is the total number of input connections that go into the unit.
2
Total Number of Outputs
This is the total number of output connections that the unit will produce.
3
Display Color
The display color refers to the color of the text and or graphics on the receiver.

Multi-Color: When more than one color is on the display, for example one part of the text is white, while the other part is blue.

Variable-Color: The display colors can be changed by the user. If the default color of text/display is blue for example, the user can change the settings to where the color turns to red. Variable color displays are typically described in detail in the item's description.

TFT-LCD Display: In-dash receivers with a video screen that display multiple colors and often times video such as DVD, navigation or other video sources.

Signal Boost/Cut
The available signal boost or cut for each of the frequency bands.
12 dB
Max Output Level
The maximum level (in volts) of signal output. A higher level will increase the clarity and boost your signal.
9 volts
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
10 - 50000 Hz
THD (Total Harmonic Distortion)
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.
.01%
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.
100 dB

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
76%
4 Star
10%
3 Star
10%
2 Star
0%
1 Star
5%

Average Attribution Rating

Durability
4.6
Value
4.6
Features
4.4
Design
4.6
Usability
4.5
David 987

French Polynesia

Overall
Durability
Value
Features
Design
Usability
Great Value !!!

December 7, 2014

I ordered it there about 1 month and I assure you that I made the right choice. Easy to connect, a rather simple design but the most important is the power and sound quality.
I can highly recommend it !!!

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Tommy

west haven, CT

Overall
Durability
Value
Features
Design
Usability
good

March 2, 2014

This thing is great boosts voltage and its a EQ... I needed at least 6v input for my amp and my HU is only 2v instead of paying big $$$ on a new HU I bought this bad lil motha seriously not bad especially for the price.

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Sam

Canada

Overall
Durability
Value
Features
Design
Usability
great EQ

January 27, 2014

Excellent EQ overall.. Sound quality is great .. I recommend it.

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cornelliss

oaklad, CA

Overall
Durability
Value
Features
Design
Usability
Go loud

September 15, 2013

This eq will have your music 10 times louder than your CD player can do. worth the money

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Reinaldo

Greensboro, NC

Overall
Durability
Value
Features
Design
Usability
Amazing Product

August 5, 2013

This product did what it need to do and more... it is a very powerful EQ. I had to turn my amps down so they wouldn't blow my subs and component speakers. I wish I had more eq adjustment for frequencies. I would highly recommend this product.

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cesar

bridge city Louisiana

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Value
Features
Design
Usability
excellent performance and quality

July 25, 2013

This is one of the best preamps I've ever used. The precision of the crossover and controls is excellent and has awesome output

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chino

longview tx

Overall
Durability
Value
Features
Design
Usability
great value

April 24, 2013

Very useful tool and easy to use I recommend it.

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Forbes2k

Laguna, California

Overall
Durability
Value
Features
Design
Usability
Led problems

March 2, 2013

I went through two of these equalizers in less than four months because the led lights kept burning out. The dealer exchanged it for a clarion eq and I have not had any problems.

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Erick

Fort Worth

Overall
Durability
Value
Features
Design
Usability
Pretty good unit, didn't work out for my set up

December 27, 2012

I installed this in my new 2013 Hyundai Sonata along with an MTX Thunder 4 channel amp, new Polk Audio coaxials (which I replaced the front Polks with Alpine Type S components). I wanted to keep the dash stock, so I wired in an NVX XPLOC2 line out converter and ran the RCA's to the center armrest storage area where I mounted the HFEQ and then ran RCA's to the amp in the trunk.

First off, the line driver gave a big boost to sound levels. However, with the gains turned up much past 25%, I got an annoying hiss. The hiss was the same loudness regardless of what the headunit volume was at, but when using the volume adjustment on the HFEQ, I could eliminate the hiss by turning it down to 25%. Once the volume on the HFEQ was at 25%, I could turn the gains up all the way and there was no hiss.

For 2 reasons, I ended up getting the Cadence CEQ773. The 4 bands on the HFEQ were just not enough adjustment for me. I was having issues with the midrange SQ, and with only one adjustment, I couldn't adjust the part of the mids that needed it and SQ suffered too much for me. Also, I wanted to see if the hiss was a problem with my wiring or ground, or if it was coming from the HFEQ. After installing the Cadence EQ, the hiss is gone completely regardless of where the gains or EQ volume adjustment is set, so I know it was the HFEQ.

All in all, I would say its a good unit, but since I couldn't get rid of the hiss and adjust things as much as I needed to with my set up, it didn't work for me. If your system needs adjustments in the mids, I would suggest going for a 7 band or higher EQ. If you just need some minor tweaking, this unit could work well for you and it is a good looking unit with easy to use controls.

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Matt

MI

Overall
Durability
Value
Features
Design
Usability
HFEQ = Awesome!

June 16, 2012

I got this 6 months ago and have been VERY happy with it. It was tested with an oscilloscope which showed it puts out a clean 9v at max volume. This line driver allows me to adjust the bass to each song because as we know every song is different so I always have just the right amount of bass. It fits beneath my Pioneer CD player perfectly and matches the interior lights with it's red LEDs. I'd recommend this to everyone.

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sean

california

Overall
Durability
Value
Features
Design
Usability
great product

March 27, 2012

Got this to boost the 2v pre outs on my head unit. I must say it has done everything I wanted and more. Love the different knobs for fine tuning my music. Fast shipping and great price. Way to go sonic!

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Chris

Lake Elmo, MN

Overall
Durability
Value
Features
Design
Usability
HFEQ

February 6, 2012

This is a quality part. It works very well in my system. I use this in conjunction with my smart phone to run my system.

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Horcrux

nevada

Overall
Durability
Value
Features
Design
Usability
Hifonics hfeq

January 9, 2012

Can't beat the price and hifonics makes good stuff. If you have amps that can be turned up to 9 volts this is a good fit for your system. It helps the poorer recorded music a lot all the 80's-90's rock gets a nice lift with the bass guitar and esp the drums. Very worth while purchase.

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phenix

VA

Overall
Durability
Value
Features
Design
Usability
Hifonics HFEQ

November 3, 2011

i love it and it work well even my friend saw it and went an buy one now my wife is saying she need one in her car Hifonics HFEQ great product.

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chilo

riverside

Overall
Durability
Value
Features
Design
Usability
hifonics hfeq

June 25, 2011

This EQ has everything I need to start a new system. Front rear subs crossovers and iPod set up. I like it. Has hi volts for loud and clear highs

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luis

philadelphia, PA

Overall
Durability
Value
Features
Design
Usability
Great Buy

February 20, 2011

I purchased 2 of these. One for my car, one for my wife's car. Easy to use, great sound, good crossover points, best of all no noise. Nice half a din size. Wish Sonicelectronix had more!

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chris

galt,ca

Overall
Durability
Value
Features
Design
Usability
hifonic hfeq

January 31, 2011

this product is great i have had it for 6 mouth this thing is unbeatable the sound quality is the best doesn't have that much but it work very well my bass is crazy 10 volt pre for my amp and also line in THE BEST IN SIMPLE TERMS

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METUA

French Polynesia

Overall
Durability
Value
Features
Design
Usability
Great Product!!

October 31, 2010

I have installed this product in my Peugeot 206, near the center console so as to reach it easily when driving and I must say that this is a good product, you can choose two sources: your head unit and your iPod as a second source. The lights are great too, I prefer the blue color instead of the red one and the line driver included works well. So, I recommend this product to anyone who prefers quality without losing power too and S.E is one of the best site ever for car audio and for shipping to my country. Thanx S.E!

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jeffrey

hemlock, MI

Overall
Durability
Value
Features
Design
Usability
great value

June 6, 2010

Excellent EQ overall.. Sound quality is great .. The built in line driver is awesome and very strong... Used it to replace my old crossfire cfq5x which always had a slight alternator noise.. Could never seem to eliminate it .. The blue lights are a bit bright but i imagine they could be defeated with minimal effort.. Only wish it was a 5 band.

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Richard

Denver, CO

Overall
Durability
Value
Features
Design
Usability
Great product

September 29, 2009

This is a great product, my system never sounded better. I have it connected to the Kenwood DDX 6019 along with the KAC-9104D and the KAC-8404 with two Kenwood W3012, Kicker DS series 6x9s and Focal components for my front stage. @ 9 volts this product made everything come alive. Thanks Sonic Electronix for offering a great product @ such a great price.

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Browse 2 questions and 5 answers
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Why did you choose this?
Sonic Electronix Store
9V output and the name to match my amp
Kirk L on Nov 30, 2014
Great sound !! I recommand it !!
LEE D on Oct 22, 2014
I have the BRX640.4 amp and it says 6.0V to 0.2V input will the 9V out of this still be ok?
Kirk L on Nov 23, 2014
Best Answer: All I know is that this is great equalizer with comparatively strong voltage output. If the manufacturer of your amp says to stay in that range for input I would comply. You would hate to void your warranty in case something happens to your amp.
Reply · Report · John A on Nov 23, 2014
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Product Summary

Manufacturer

Model Number

HFEQ

UPC

806576213901

Weight

2.00lbs

Internal SKU

hfeq

Internal Product ID

18601

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 HFEQ