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Infinity Car Audio & Electronics

Infinity Car Amplifiers

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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.
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.
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.
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.
Minimum Impedance Unbridged
The lowest impedance the amplifier will handle when it is not bridged.
Minimum Impedance Bridged
The lowest impedance the amplifier will handle when it is bridged.
Remote bass/level controller
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.
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.
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.

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.
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.
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Infinity Kappa Perfect 3002A with NVX 8 Gauge Amp Kit

300W RMS Kappa Series Class-D 2-Channel Compact Powersports Amplifier

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Infinity Kappa Perfect 3002A with NVX 8 Gauge Amp Kit

300W RMS Kappa Series Class-D 2-Channel Compact Powersports Amplifier

• 100 watts x 2 channel @ 4 ohm
• 150 watts x 2 channel @ 2 ohm
• Bridged: 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

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60
List price $535.94
-17% $444.94

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• 100 watts x 2 channel @ 4 ohm
• 150 watts x 2 channel @ 2 ohm
• Bridged: 300 watts x 1 channel @ 4 ohm
• Total RMS Power: 300 watts
• Class D 2 ohm Stable 2-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity Reference 3004A with NVX 8 Gauge Amp Kit

400W RMS Reference Series Class-H 4-Channel Amplifier

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Infinity Reference 3004A with NVX 8 Gauge Amp Kit

400W RMS Reference Series Class-H 4-Channel Amplifier

• 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 H 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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43
List price $477.94
-21% $379.94

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Add to Cart

• 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 H 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity Reference 6001A with Belva 8 Gauge Amp Kit

600W RMS Reference Series Class D Monoblock Amplifier with Remote Bass Knob

REFERENCE6001A_BAK82 big
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Infinity Reference 6001A with Belva 8 Gauge Amp Kit

600W RMS Reference Series Class D Monoblock Amplifier with Remote Bass Knob

• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

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List price $419.94
-24% $319.95

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• 350 watts x 1 channel @ 4 ohm
• 600 watts x 1 channel @ 2 ohm
• Total RMS Power: 600 watts
• Class D 2 ohm Stable Monoblock Amplifier
• Includes Amplifier Wiring Kit

Infinity DSP4425 (INFDSP4425AM) with NVX 8 Gauge Amp Kit

200W Peak (140W RMS) DSP Series Class-AB 4-Channel Amplifier with Digital Signal Processing

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Infinity DSP4425 (INFDSP4425AM) with NVX 8 Gauge Amp Kit

200W Peak (140W RMS) DSP Series Class-AB 4-Channel Amplifier with Digital Signal Processing

• 25 watts x 4 channel @ 4 ohm
• 35 watts x 2 channel @ 2 ohm
• Total RMS Power: 140 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

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• 25 watts x 4 channel @ 4 ohm
• 35 watts x 2 channel @ 2 ohm
• Total RMS Power: 140 watts
• Class A/B 2 ohm Stable 4-Channel Amplifier
• Includes Amplifier Wiring Kit

Infinity DSP4425 with Amplifier Wiring Kit

200W 4-channel Class A/B Amplifier with Built in Digital Signal Processing (DSP)

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Infinity DSP4425 with Amplifier Wiring Kit

200W 4-channel Class A/B Amplifier with Built in Digital Signal Processing (DSP)

• 25 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 200 Watts
• CEA-2006 Compliant Amplifier
• Soft start turn-on
• Speaker-level (high-level) inputs
• Includes Amplifier Wiring Kit

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• 25 Watts RMS x 4 @ 4 ohm
• Total Peak Power: 200 Watts
• CEA-2006 Compliant Amplifier
• Soft start turn-on
• Speaker-level (high-level) inputs
• Includes Amplifier Wiring Kit

Infinity Reference 3004A (AMPRF3004AAM) + Belva BAK84 8 Gauge Amp Wiring Kit

Reference Series 4-channel Car Amplifier

Reference 3004A, BAK84 big
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Infinity Reference 3004A (AMPRF3004AAM) + Belva BAK84 8 Gauge Amp Wiring Kit

Reference Series 4-channel Car Amplifier

• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Low-profile chassis and a small overall footprint
• On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage.
• Dimensions: 12-5/8" W x 7" D x 2-3/16" H
• Includes Belva BAK84 8 Gauge Amp Wiring Kit

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41
List price $429.94
-26% $319.95

In stock

Only 1 Left!

Add to Cart

• 75 Watts RMS x 4 @ 4 ohm
• 100 Watts RMS x 4 @ 2 ohm
• CEA-2006 Compliant/Preamp Outputs/LPF
• Low-profile chassis and a small overall footprint
• On-board circuitry protects the Reference 3004A from shorts, high-temperature, overvoltage and undervoltage.
• Dimensions: 12-5/8" W x 7" D x 2-3/16" H
• Includes Belva BAK84 8 Gauge Amp Wiring Kit

Infinity Reference 7005A (AMPRF7005AAM) + Free NVX Premium Amp Kit

Reference Series High Performance Class AB+D 5-Channel Amplifier + XKIT46

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Infinity Reference 7005A (AMPRF7005AAM) + Free NVX Premium Amp Kit

Reference Series High Performance Class AB+D 5-Channel Amplifier + XKIT46

• 5-Channel Amplifier
• Phase Switch on Sub Channel
• Full Board Protection
• Variable High and Low Pass Filter
• Class AB + D Technology

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47
List price $709.94
-31% $489.95

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• 5-Channel Amplifier
• Phase Switch on Sub Channel
• Full Board Protection
• Variable High and Low Pass Filter
• Class AB + D Technology

Infinity Kappa Perfect 5004A with NVX 8 Gauge Amp Kit

500W RMS Kappa Perfect Series Class-D 4-Channel Powersports Amplifier

KAPPA5004A_XKIT84 big
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Infinity Kappa Perfect 5004A with NVX 8 Gauge Amp Kit

500W RMS Kappa Perfect Series Class-D 4-Channel Powersports Amplifier

• 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
• Includes Amplifier Wiring Kit

Save 15% Off Package Deals at Checkout!
shipping truck icon Free shipping in USA. Provide zip for delivery date.
39
List price $657.94
-33% $439.94

Available

Ships in 10-14 days

Add to Cart

• 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
• Includes Amplifier Wiring Kit

 
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    ALL Infinity STORE CATEGORIES

    In 1968, Infinity Systems was founded as an official manufacturer of loudspeakers. In 1983, that successful loudspeaker company joined the Harman International Industries group to further enhance their loudspeaker technology and bring affordable, yet great sounding, to those seeking the finest speakers. Today, Infinity has grown to be a popular and trusted name in both car audio and home audio. When a product is branded with that Infinity logo, it can be trusted to produce only the finest quality of professional grade sound. The company has grown from manufacturing only loudspeakers, to designing and engineering car speakers, subwoofers, amplifiers, marine speakers, as well as home speakers and subwoofers. Infinity technology is a leader in the car audio industry and the proof of this is found in their speakers, subwoofers, and amplifiers. Most notable for Infinity is their line of Kappa speakers, Kappa amplifiers, Basslink enclosed subwoofer systems, and Perfect series subwoofers. Subwoofer technologies, such as the SSI (Selectable Smart Impedance) and removable pole-pieces have separated them from the rest of the industry. They offer an audiophile solution to enhancing the sound in any car, truck, SUV, boat, or home. Sonic Electronix, one of the leaders in car audio, recently visited Harman, the premium global audio and infotainment group, at their research and development locations in Northridge, California and Detroit, Michigan. The purpose of these visits was to utilize and combine the powerful brand of Harman and the industry leading knowledge behind Sonic Electronix to begin working together on developing future car audio projects.

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