Garage
Shop

See all parts that fit your 2011 Civic

Hifonics ZXi 6406

680 watts, Zeus ZXi 4-Channel Amplifier ZXi6406

Hifonics
Shop all Hifonics
Product videos
highlight-star-icon

85 watts RMS x 4 chan. @ 4 Ohm / 170 watts RMS x 4 chan. @ 2 Ohm / 340 watts x 2 chan. @ 4 Ohm • Bridgeable • Bass Remote • <0.05% THD • Signal to Noise >95 dB

Learn more about the zxi6406

Good news and a little bad...

This item has been discontinued

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

zxi6410 thumbnail

Hifonics ZXi 6410

OUR PRICE: $149.99

View item

Loading...
82-7805 main

Metra 82-7805

6" to 6-3/4" Speaker Plate Adapter for select 2004-2023 vehicles from Honda, Acura

12
-47.38%

$19.99

List price $37.99

72-7800 main

Metra 72-7800

Install New Speakers in select 1990-2024 vehicles from Honda, Acura, Isuzu

90
-33.36%

$9.99

List price $14.99

40-HD10 main

Metra 40-HD10 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2005-2024 vehicles from Honda, Mazda, Acura

29
-15.40%

$10.99

List price $12.99

70-1721 main

Metra 70-1721 Wiring Harness

Install a new car stereo in select 1998-2013 vehicles from Honda, Suzuki, Acura

27
SAHC634 main

Scosche SAHC634

6-1/2" Door Speaker Adapter for select 2006-2019 vehicles from Honda, Acura

18
-13.38%

$12.95

List price $14.95

99-7816G main

Metra 99-7816G Dash Kit

Install a new Single-DIN or Double-DIN car stereo in select 2006-2011 Civic

9
-34.79%

$29.99

List price $45.99

HSB524 main

American International HSB524

6.5" to 6.75" Speaker Mounting Adapters for select 2006-2021 vehicles from Honda, Acura, GMC

6
-55.21%

$12.99

List price $29.00

99-7816T main

Metra 99-7816T Dash Kit

Install a new Single-DIN or Double-DIN car stereo in select 2006-2011 Civic

1
-45.66%

$24.99

List price $45.99

99-7871 main

Metra 99-7871 Dash Kit

Install a new Single-DIN or Double-DIN car stereo in select 2006-2011 Honda Civic (Gray)

2
-24.26%

$49.99

List price $66.00

70-1722 main

Metra 70-1722 Wiring Harness

Install a new car stereo in select 2006-2014 vehicles from Honda

13

Product Highlights


85 watts RMS x 4 chan. @ 4 Ohm / 170 watts RMS x 4 chan. @ 2 Ohm / 340 watts x 2 chan. @ 4 Ohm • Bridgeable • Bass Remote • <0.05% THD • Signal to Noise >95 dB

Description


Hifonics brand icon

Authorized dealer

  • 4/3/2 channel operation
  • 85 watts RMS x 4 chan. @ 4 Ohm / 170 watts RMS x 4 chan. @ 2 Ohm / 340 watts x 2 chan. @ 4 Ohm
  • Bridgeable A/B Class Amplifier Topography
  • Ultra-Fi MOSFET Outputs
  • DC, Short, Thermal Overload Protection
  • Illuminated Hifonics Logo
  • PWM MOSFET EXVP (Exponential Vari-Power Supply)
  • SPC Twin Turbo-Torroids with Simpatico Coil Design
  • Fully Adjustable Accu Cross
  • Crossover Includes:
    • 12 dB Hi-Pass Crossover
    • 24 dB Low-Pass Crossover
  • Bass Boost:
    • 18 dB Variable Bass Equalization
  • Remote Bass Control No Longer Included As Amplifier has been Revised by Hifonics and the Bass Remote is an Optional Accessory.
  • RCA Line Outputs:
    • Permit Amplifier Daisy-Chaining
  • 4 Gauge Power Connectors
  • 1-year SonicElectronix.com warranty

Product history:

Hifonics ZXi6410 thumbnail
(newest, current model)
Hifonics ZXi6408 thumbnail
(previous model, replaced by Hifonics ZXi 6410)
Hifonics ZXi6406 thumbnail
(previous model, replaced by Hifonics ZXi 6408)
Hifonics ZX6400 thumbnail
(previous model, replaced by Hifonics ZXi 6406)

Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

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

123
-33.36%

$79.96

List price $119.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

3
-16.67%

$349.99

List price $420.00

Limited time!
46CSC6934 main

Kicker CSC693 (46CSC6934)

900W Peak (300W RMS) 6x9” CS Series 3 Way Coaxial 4-ohm Speakers with Integrated Midrange Speakers

40
-30.02%

$111.96

List price $159.99

BMV62W main

Belva BMV62W

6.2" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto and Phone Mirroring

28
-66.67%

$89.99

List price $269.99

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

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

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth

44
-16.69%

$149.95

List price $180.00

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3
Limited time!
DMH-W3050NEX main

Pioneer DMH-W3050NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay and Android Auto, and Built-in Alexa (Sirius XM Ready)

1
-24.20%

$469.99

List price $620.00

DMH-W4660NEX main

Pioneer DMH-W4660NEX

6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)

2
-20.00%

$599.99

List price $750.00


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

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

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

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

R2-500X4 small

Rockford Fosgate Prime R2 R2-500X4

• 75 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

(10)

$359.99

List price $359.99

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

KTA-450 small

Alpine KTA-450 Power Pack

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

(20)

$299.95

List price $360.00

Specifications & Details


Power Specifications - Full Range Channels
RMS Power @ 4 ohms
85 watts x 4 channel
RMS Power @ 2 ohms
170 watts x 4 channel
RMS Power @ 1 ohm
Not Stable
Bridged RMS Power
340 watts x 2 channel
Amplifier Specifications
Amplifier Class
A/B
Number of Channels
4-Channel
Total RMS Power Output
680 watts
Minimum Impedance Unbridged
2 ohm
Minimum Impedance Bridged
4 ohms
THD at Rated RMS Power
0.03%
Speaker Level Inputs
No
Preamp Outputs
1 pair
Built-in Crossover
Low-Pass (LP)
High-Pass (HP)
Full (AP)
High-Pass Crossover Frequency
10 - 1200 Hz
Low-Pass Crossover Frequency
50 - 150 Hz
Signal-to-Noise Ratio
95 dB
Channel Separation
70 dB
Bass Boost
0 - 18 dB
Remote bass/level controller
Optional (Accessory required and sold separately)
Fuse Rating
60A x 1 
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

ZXi6406

Weight:

14.00lbs

Internal SKU:

zxi6406

Internal Product ID:

6519

Product and How-to Videos


Customer Ratings & Reviews


Hifonics ZXi 6406 thumbnail image

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



Durability
5
Value
5
Features
4.9
Design
4.9
Usability
5

Customer Reviews

Sort by:

Loading...

I Love Hifonics

First off Thank You SE for having such great prices I went to a local shop and saw this amp for alomst triple your price. This Amp is GREAT coming from an audio engineer you cant buy a better amp at th9is price range, this easily competes with the Audiophile Amps costing thousands,

By Jason on July 9, 2008

5 found this helpful


Awesome Amp!

this amp is really very nicely built and has more than enough juice for any speakers. i have it pushing alpine type r components in the front and type r coax in the back and its really crisp and clear and loud. there is not any distortion and also the amp never really gets hot. so overall its a good amp and u wont regret buying it.

By Priyank on August 11, 2008

4 found this helpful


Awesome.

Great Product. Well worth the money. Skip buying anything more expensive to power 4 channels. More power then stated.

By Kevin on December 28, 2008

3 found this helpful


doubt?

i have 2 mtx 7500 12'', which amp will be better for them? this amp bridge, or the one with 2 channels ZXi 1006?

By gustavo on November 8, 2006

3 found this helpful


Nicee AMP

this is a really nice amp..Definitely one of the most versatile for the money. It cracks the whip when you crank that music up and stays clear.. I love this amp..

By James on December 8, 2007

2 found this helpful


Another great innovation from Hifonics

this was my first hifonics purchase i made and i planned on making more later on, but this amp sounds unbelievable teamed up with my kenwood excelon XXV-01D head unit and excelon speakers, i have never heard such clarity before, truely an amazing innovation and plan on purchasing more Hifonics items soon.

By steven on June 9, 2006

2 found this helpful




P1675-S small

Rockford Fosgate Punch P1 P1675-S

240W Peak (120W RMS) 6.75" Punch Series 2 Way Component 4-ohm Speakers

(20)

$159.99

List price $159.99

MKB42B small

Avanti MKB42B

Black Multi-Function Convection Toaster Oven

$119.99

List price $215.00

PX3200D small

Planet Audio PX3200D

1800W RMS Axis Series Class D Monoblock Car Amplifier

(2)

$124.95

List price $341.00

SB-GM-SXT/DRIVER/GA2 small

JL Audio SB-GM-SXT/DRIVER/GA2 (PEWTER)

Chevrolet Silverado / GMC Sierra Extended Cab 2003-2007, Driver Side 10" Dual 4 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 1 10W6v2-D4 Subwoofer

$749.95

List price $799.99

SB-GM-SXT/DRIVER/DG small

JL Audio SB-GM-SXT/DRIVER/DG (GRAPHITE)

Chevrolet Silverado / GMC Sierra Extended Cab 1999-2002, Driver Side 10" Dual 4 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 1 10W6v2-D4 Subwoofer

$749.95

List price $799.99

DXi6501 small

Polk Audio DXi6501 (DXi 6501) LIKE NEW DAMAGED PACKAGING

6-1/2" 2-way Component Car Speakers - Same Performance as DB6501, Marine Certified for Boats!

$76.99

List price $199.99

SB-GM-SXT/DRIVER/TN small

JL Audio SB-GM-SXT/DRIVER/TN (MEDIUM OAK)

Chevrolet Silverado / GMC Sierra Extended Cab 1999-2002, Driver Side 10" Dual 4 ohms Loaded Vehicle Specific Stealthbox Subwoofer Enclosure with 1 10W6v2-D4 Subwoofer

$749.95

List price $799.99

Related Searches


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

2011 Honda Civic

2000 Saab 9-5

2018 Lincoln MKT

2003 Hyundai Sonata

2003 Saturn Ion-1

1990 Pontiac 6000

1973 GMC Jimmy

2000 Cadillac Eldorado

1994 Jeep Cherokee

1998 Chevrolet Blazer

Vehicle
Store
Delete

2018 Can-Am Commander Max 1000 XT

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.