Expert Service 1-877-289-7664 [Hours]

Infinity KAPPA ONE

1600W Max, Kappa Series Class D Mono Subwoofer Amplifier

In Stock
|

List price $549.95

$229.95

with warranty

You Save: $320.00 (58.19%)

Arrives by Friday, Sept. 5 to zip 20147

Add an Extended Warranty

Fast, Free Shipping

Within the US 48

60-Day Money-Back

Hassle Free Returns

Low Price Guarantee

Seen it for less? Click here

365-Day Coverage

Warranty assistance for a year

In Stock

Arrives by Fri, Sept. 5

Get FAST answers from customers ASK a Question See questions answers

Bundled Savings with this Product

=

25% off a 4 Gauge Amp Kit with Purchase

You will need an amp kit to install your amp, and the Belva BAK42 is the perfect kit for this amp. For a limited time, when you click "Add Both to Cart", you'll receive 25% off the amp kit with the purchase of select amplifiers.

7.50

17417

294

Infinity KAPPA ONE

$229.95

+

25% OFF

Belva BAK42

$29.99

Special Price $22.49 ($29.99 if purchased separately)

Belva BAK42

• Complete 4 Gauge 2-Channel Amplifier Installation Kit
• Designed Specifically For Car Audio Systems Up to 1000 Watts RMS
• Premium Power and Ground Wire Provides Optimal Power Transfer

(Offer 1 of 1)

Combined Total Price

$252.44

You Save $7.50

  • Kappa Series Class D Mono Subwoofer Amplifier
  • RMS Power Rating:
    • 4 ohms: 500 watts x 1 chan.
    • 2 ohms: 800 watts x 1 chan.
  • Max power output: 1600 watts
  • MOSFET power supply
  • 3 LED indicators (2 power, 1 protect)
  • Bass Boost (0-12 dB)
  • DirectFET transistors increase power output and overall efficiency
  • Non-Stop Thermal Protection (The amplifier will gradually reduce output to cool the amplifier down instead of shutting it off if it overheats)
  • Dynamic Bass Optimization (DBO): Fine-tune the bass in your system to optimize performance. The frequency control also acts as a subsonic filter
  • Protection Circuitry (DC output, over/under voltage, short circuit)
  • Heavy duty aluminum alloy heatsink for supreme heat dissipation
  • Preamp RCA outputs
  • 1 Channel operation
  • RCA level inputs
  • Screw terminals
  • Variable high-pass filter (10-80 Hz, 12 dB/octave)
  • Variable low-pass filter (32-320 Hz, 12 dB/octave)
  • Subsonic Filter (24 dB at 15 Hz)
  • CEA-2006 compliant amplifier
  • Frequency response: 20-320 Hz
  • Dimensions: 13"L x 7-1/16W x 1-3/4H
  • 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
  • 3-year Manufacturer's warranty

Power Specifications - Subwoofer Channel

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 speaker(s) or subwoofer(s) 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
500 watts x 1 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 speaker(s) or subwoofer(s) 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
800 watts x 1 channels
RMS Power @ 1 ohm
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 speaker(s) or subwoofer(s) equals 1 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. The 5th channel on these particular amplifiers are usually dedicated for driving subwoofers.
Not Stable
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. 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. This is the peak power output for the amplifier's 5th channel.
1600 watts x 1 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.
Kappa (Infinity)
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.

D
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.
1 - Mono
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.

1600 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.

800 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.
4 AWG
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
2 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%
Preamp Outputs
Many amplifiers are equipped with RCA preamp outputs which pass the original music signal from the source to additional amplifiers. This is known as daisy chaining because the source connects to the first amp, and the first amp connects to the second amp, etc. The advantage to daisy chaining is you only need one 2-channel RCA cable to transfer the signal from the head-unit to the amplifier, and then one additional cable for each amp being daisy chained.
1 pair
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.

10 - 80 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.

32 - 320 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.
85 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.
40A x 3 
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.

Yes

Specials with this Item

Promotions
Promotions we have offer More Ways to Shop for items that are on clearance, last chance, special offer and sales, Made in America, and more!
On Sale

Warranty and Return Policy

Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider
Manufacturer

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
75%
4 Star
17%
3 Star
0%
2 Star
8%
1 Star
0%

Average Attribution Rating

Durability
4.3
Value
4.5
Features
4.3
Design
4.7
Usability
4.7

jamie

warrensburg, IL

Overall
Durability
Value
Features
Design
Usability

everything I was hoping for and a bit more

June 24, 2014

To all of you giving this a negative review because it wont perform at 1ohm....read the manual It states its not stable at 1ohm. Have this hooked up to a 120.9w 12" kappa subwoofer with the switch set on 2ohm. This puts it at roughly 800 watts and it is crisp clear and more than loud enough for my boat application. Yes that's correct I put it in a boat and it sounds great. Would definitely recommend this product. Run a good amp kit like nvx keep it at 2ohm or higher and this amp will not let you down. Also love the quick shipping and helpful courteous staff at sonicelectronix. Keep up the good work

0 of 0 found this helpful

Help our customers find the most helpful reviews

keyshanayla

miami,FL

Overall
Durability
Value
Features
Design
Usability

great value

June 15, 2014

shopping in sonic electronic is always offering in great price...and fast shipping...love it

0 of 0 found this helpful

Help our customers find the most helpful reviews

Danny

Gastonia, NC

Overall
Durability
Value
Features
Design
Usability

great!

April 4, 2014

This amp is alot smaller than I thought but it packs more punch than I thought it would! Would buy it again without a thought.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Pimpin Pimpin

Centralia, WA

Overall
Durability
Value
Features
Design
Usability

Infinity kappa one

January 18, 2014

Awesome service, fast delivery, amazing product, it powers up a single type x 12 wired at 2ohm sitting in the trunk of a corolla eventho it's tamed down it rattles your eyeballs it does suck a lot of power tho I had to get a kinetik 1200 to keep my main battery from dropping to 9v, this amp has everything I needed to bump loud and clear

0 of 0 found this helpful

Help our customers find the most helpful reviews

Derek

Royal Oak, MI

Overall
Durability
Value
Features
Design
Usability

Works good

December 3, 2013

This amp is great but I would not recommend it for 1ohm use. At 1ohm with max volume and a lot of bass hits, this thing will overheat in 15-30 minutes. Probably faster on a hot day. If you do run it at 1ohm then don't expect to be pushing 1200w to your speakers at all times. I am running it at 1ohm now but I don't blast it for more than a couple minutes and it works great. It is solid at 2 ohms.

0 of 0 found this helpful

Help our customers find the most helpful reviews

kp

san jose

Overall
Durability
Value
Features
Design
Usability

avoid

September 21, 2013

do not listen to what others say about running this amp at 1 ohm. it is definitely not stable at 1 ohm and it will overheat and shut down. i was using this to power a t212 rf subwoofer. wired it to 1 ohm hoping to get close to the 1200 rms this sub can take. had a custom amp rack built around having matching kappa amps just to find out they are worthless. should have just spent the extra 400 and gotta alpine or sundown amps

0 of 0 found this helpful

Help our customers find the most helpful reviews

Araudioman

Canada

Overall
Durability
Value
Features
Design
Usability

Infinity amps

September 4, 2013

These amp are built with the highest quality materials. Just bullet proof recommend for all applications.

0 of 0 found this helpful

Help our customers find the most helpful reviews

J Ro

Phoenix, AZ

Overall
Durability
Value
Features
Design
Usability

Solid!

September 3, 2013

I bought this to power two Kappa 10's. The sound is so clean--almost no distortion as the volume and gain increase with a flat EQ. I was amazed at how small it is! I installed this and the Kappa Four under each of my car's front seats with no clearance issues. I am extremely pleased with yet another Infinity product.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Anthony

Janesville, Wi

Overall
Durability
Value
Features
Design
Usability

GREAT AMP!!!!

August 14, 2012

First, This amp is one ohm stable. i am currently running a single 10" at 1 ohm(dual2) and this thing really punches! just make sure not to over power your subwoofer too much! i clamped this amp at close to 1300 rms at 1 ohm. I have never seen such a small amp put out so much power. This amp will turn off if your impedance's get under .6 ohms i believe. get a stable sub.

0 of 0 found this helpful

Help our customers find the most helpful reviews

H-Town

Hollister ca

Overall
Durability
Value
Features
Design
Usability

Huge power!!

September 7, 2011

Huge power for such a small unit!!

0 of 0 found this helpful

Help our customers find the most helpful reviews

Andrew

Australia

Overall
Durability
Value
Features
Design
Usability

Great

December 31, 2009

Fantastic amp. have had it for 6 months and no problems at all with it. Love it. it's small and easy to hide and works a dream

0 of 0 found this helpful

Help our customers find the most helpful reviews

John

Midwest City, OK

Overall
Durability
Value
Features
Design
Usability

Great Product

May 1, 2009

Bought this amp to run two Infinity Kappa Perfect 12 VQ. The amplifier sounds great and has a fair amount of control available. I bench tested the amp with 2 Infinity Kappa Perfect 12 VQ and also with those two plus a Kicker S12L74. I was quite suprised how much power the amplifier was capable of putting out and how cool the amp stayed while doing it. Excellent product, would recommend for normal setups, and also stealth setups where air flow may be low.

0 of 0 found this helpful

Help our customers find the most helpful reviews

Accessory Tools and Products

Accessories added

NVX XKIT42 100% OFC True 4 Gauge Wiring Kit with RCA Cables and Speaker Wire

The reviews speak for themselves, this is awesome wire with everything you need!

Your Price $89.99

Stinger SK4641 4 Gauge Wiring Kit

Get a high quality amp kit from Stinger to get the most from your new amp!

Your Price $64.99

NVX XBG3PK 1/0 Gauge OFC Big 3 Upgrade Kit

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

Your Price $79.99

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 $149.99

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 FB4

4 AWG / 4 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

Professional Installation for your Car Power Amplifier

Covers labor charges through our professional installer network.

Your Price $89.99

NVX XIV25 V-Series 2-Channel RCA Cable

16.4 ft of V-Series 2-Channel RCA Audio Premium Interconnect Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $11.99

NVX XIX25 X-Series RCA Interconnect Cable

16.4 ft. of 4-Channel X-Series RCA Cable with Dual Twisted Pair Hyper-Flex Technology

Your Price $26.99

NVX XWS1225 12 AWG Speaker Wire

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

Your Price $39.99

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

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

AutoSound 2000 CD-102

High Frequency Test CD specifically designed for the set-up and evaluation of sound system imaging and placement.

Your Price $11.99

Hide answersShow all answers | Sort by
No questions have been asked about this item. Be the first!

Product Summary

Manufacturer

Model Number

KAPPA-ONE

UPC

050667035044

Weight

8.50lbs

Internal SKU

kappaone

Internal Product ID

17417

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: Infinity KAPPA ONE