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  1. Home
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  3. Discontinued Crunch Car Audio & Electronics
  4. Discontinued Crunch Car Amplifiers
  5. Discontinued Crunch 4-Channel Amplifiers

Discontinued Crunch 4-Channel Amplifiers

Perfect audio harmony awaits with Crunch's versatile 4-Channel 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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You are currently viewing discontinued products.

Crunch PX1000.4 4 Channel Amplifier w/ Complete 4 AWG Amp Kit

1000W POWERX Series 4-channel Bridgeable Car Audio Amplifier + Amp Kit

PX1000.4_BAK44 big DISCONTINUED
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Crunch PX1000.4 4 Channel Amplifier w/ Complete 4 AWG Amp Kit

1000W POWERX Series 4-channel Bridgeable Car Audio Amplifier + Amp Kit

• 125 Watts RMS x 4 @ 4 ohm
• 250 Watts RMS x 4 @ 2 ohm
• 500 Watts RMS x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Complete 4 Gauge 4-Channel Amplifier Installation Kit

35

• 125 Watts RMS x 4 @ 4 ohm
• 250 Watts RMS x 4 @ 2 ohm
• 500 Watts RMS x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Complete 4 Gauge 4-Channel Amplifier Installation Kit

EXCLUSIVE

Crunch P1 600.4 + Amplifier Kit

600W Max, 4-Channel Power One Series Car Amplifier with 8 Gauge Amplifier Kit Included

P1-600.4_05PK8 big DISCONTINUED
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Crunch P1 600.4 + Amplifier Kit

600W Max, 4-Channel Power One Series Car Amplifier with 8 Gauge Amplifier Kit Included

Power One Series 4-Channel Class A/B Car Amplifier • 600W Max • 75W x 4-Chan @ 2 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • 3-Way System Protection Circuitry

18

Power One Series 4-Channel Class A/B Car Amplifier • 600W Max • 75W x 4-Chan @ 2 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • 3-Way System Protection Circuitry

EXCLUSIVE

Crunch P1 1000.4 + Amplifier Kit

1000W Max, 4-Channel Power One Series Car Amplifier with 4 Gauge Amplifier Kit Included (P11000.4)

P1-1000.4_AMP850BL big DISCONTINUED
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Crunch P1 1000.4 + Amplifier Kit

1000W Max, 4-Channel Power One Series Car Amplifier with 4 Gauge Amplifier Kit Included (P11000.4)

Power One Series 4-Channel Class A/B Car Amplifier • 1000W Max • 125W x 4-Chan @ 2 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • Included 4 Gauge Amplifier Kit

33

Power One Series 4-Channel Class A/B Car Amplifier • 1000W Max • 125W x 4-Chan @ 2 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • Included 4 Gauge Amplifier Kit

Crunch PX-1000.4 1000 Watt Amp Car Stereo Amplifier + Amp Kit

1000W POWERX Series 4-channel Bridgeable Car Audio Amplifier Package

PX1000.4, TC4KIT8B big DISCONTINUED
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Crunch PX-1000.4 1000 Watt Amp Car Stereo Amplifier + Amp Kit

1000W POWERX Series 4-channel Bridgeable Car Audio Amplifier Package

• 125 Watts RMS x 4 @ 4 ohm
• 250 Watts RMS x 4 @ 2 ohm
• 500 Watts RMS x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

42

• 125 Watts RMS x 4 @ 4 ohm
• 250 Watts RMS x 4 @ 2 ohm
• 500 Watts RMS x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

EXCLUSIVE

1900 Watt Crunch Powerzone Dual Amplifier Combo with Power Wiring Kit

List price $489.97: PZX Series 1000W Monoblock & 900W 4-Channel Class AB Amplifiers with 1/0 + 4 Gauge Dual Amplifier Power Kit

PZX1000.1_PZX900.4_BPK0D big DISCONTINUED
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1900 Watt Crunch Powerzone Dual Amplifier Combo with Power Wiring Kit

List price $489.97: PZX Series 1000W Monoblock & 900W 4-Channel Class AB Amplifiers with 1/0 + 4 Gauge Dual Amplifier Power Kit

• Total Peak Power: 1900 Watts
• SEPP (Single Ended Push Pull) A/B Class Amplifier Designs
• Wired remote bass level control included
• Variable subsonic filter: 10 - 40 Hz
• Variable Bass Boost and Full-Range Crossovers

44

• Total Peak Power: 1900 Watts
• SEPP (Single Ended Push Pull) A/B Class Amplifier Designs
• Wired remote bass level control included
• Variable subsonic filter: 10 - 40 Hz
• Variable Bass Boost and Full-Range Crossovers

Crunch PX-1000.4 1000 Watt 4 Ch. Powerful Car Audio Amplifier+Amp Wire Kit

Crunch PX-1000.4 1000 Watt 4 Ch. Powerful Car Audio Amplifier+Amp Wire Kit

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Crunch PX-1000.4 1000 Watt 4 Ch. Powerful Car Audio Amplifier+Amp Wire Kit

Crunch PX-1000.4 1000 Watt 4 Ch. Powerful Car Audio Amplifier+Amp Wire Kit

• 125 Watts x 4 @ 4 ohm
• 250 Watts x 4 @ 2 ohm
• 500 Watts x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

58

• 125 Watts x 4 @ 4 ohm
• 250 Watts x 4 @ 2 ohm
• 500 Watts x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

Crunch PDX-1000.4 + Complete 4 AWG Amp Kit

1000W Max PDX Series Bridgeable 4-Channel Class A/B Car Amplifier + Amp Kit

PDX-1000.4_BAK44 big DISCONTINUED
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Crunch PDX-1000.4 + Complete 4 AWG Amp Kit

1000W Max PDX Series Bridgeable 4-Channel Class A/B Car Amplifier + Amp Kit

Power One Series 4-Channel Class A/B Car Amplifier • 1000W Max • 500W x 2-Chan @ 1 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • 3-Way System Protection Circuitry • Complete 4 Gauge 4-Channel Amplifier Installation Kit

Power One Series 4-Channel Class A/B Car Amplifier • 1000W Max • 500W x 2-Chan @ 1 Ohm • SEPP Analog Amplifier • Variable Bass Boost • Speaker-Level Inputs • Preamp RCA Outputs • 3-Way System Protection Circuitry • Complete 4 Gauge 4-Channel Amplifier Installation Kit

Crunch PZX1800.4 4 Channel Amplifier w/ Complete 4 AWG Amp Kit

1800W 4-Channel Powerzone Series Class AB Car Amplifier + Amp Kit

PZX1800.4_BAK44 big DISCONTINUED
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Crunch PZX1800.4 4 Channel Amplifier w/ Complete 4 AWG Amp Kit

1800W 4-Channel Powerzone Series Class AB Car Amplifier + Amp Kit

• RMS Power: 225W x 4 @ 4 ohm, 450W x 4 @ 2 ohm, 900W x 2 @ 4 ohm Bridged
• Total Peak Power: 1800W
• Rugged MOSFET Pulse Width Modulation Power Supply
• Complete 4 Gauge 4-Channel Amplifier Installation Kit

• RMS Power: 225W x 4 @ 4 ohm, 450W x 4 @ 2 ohm, 900W x 2 @ 4 ohm Bridged
• Total Peak Power: 1800W
• Rugged MOSFET Pulse Width Modulation Power Supply
• Complete 4 Gauge 4-Channel Amplifier Installation Kit

Crunch 4 Channel 1000W A/B Class Stereo Amplifier & 2 Channel Amp & Wiring Kit

Crunch 4 Channel 1000W A/B Class Stereo Amplifier & 2 Channel Amp & Wiring Kit

No picture DISCONTINUED
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Crunch 4 Channel 1000W A/B Class Stereo Amplifier & 2 Channel Amp & Wiring Kit

Crunch 4 Channel 1000W A/B Class Stereo Amplifier & 2 Channel Amp & Wiring Kit

• 125 Watts x 4 @ 4 ohm
• 250 Watts x 4 @ 2 ohm
• 500 Watts x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

58

• 125 Watts x 4 @ 4 ohm
• 250 Watts x 4 @ 2 ohm
• 500 Watts x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

Crunch 4 Channel 1000W A/B Class Stereo Amplifier (2 Pack) & Wiring Kit (2 Pack)

Crunch 4 Channel 1000W A/B Class Stereo Amplifier (2 Pack) & Wiring Kit (2 Pack)

No picture DISCONTINUED
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Crunch 4 Channel 1000W A/B Class Stereo Amplifier (2 Pack) & Wiring Kit (2 Pack)

Crunch 4 Channel 1000W A/B Class Stereo Amplifier (2 Pack) & Wiring Kit (2 Pack)

• 125 Watts x 4 @ 4 ohm
• 250 Watts x 4 @ 2 ohm
• 500 Watts x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

42

• 125 Watts x 4 @ 4 ohm
• 250 Watts x 4 @ 2 ohm
• 500 Watts x 2 Bridged @ 4 ohm
• Total Peak Power: 1000 Watts
• Speaker-level (high-level) inputs
• Variable high-pass filter: 120 - 3000 Hz
• Variable low-pass filter: 50 - 250 Hz
• Variable Bass Boost: 0 to +12 dB bass boost

Crunch PD1000.4 1000w 4-Channel Pro Power Car Audio Amplifier Class AB+Amp Kit

1000W Max Power Drive Series 2-Ohm Stable Bridgeable 4-Channel Amplifier + Complete 4 Gauge Amplifier Wiring Kit Package

PD 1000.4, BAK44 big DISCONTINUED
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Crunch PD1000.4 1000w 4-Channel Pro Power Car Audio Amplifier Class AB+Amp Kit

1000W Max Power Drive Series 2-Ohm Stable Bridgeable 4-Channel Amplifier + Complete 4 Gauge Amplifier Wiring Kit Package

• 125 Watts RMS x 4 @ 4 ohm
• 250 Watts RMS x 4 @ 2 ohm
• Bridged: 500 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Variable high-pass filter: 60 - 1200 Hz
• Variable low-pass filter: 30 - 250 Hz
• Variable Bass Boost: 0 to +9 dB bass boost at 50 Hz
• Dimensions: 11.4"W x 14.2"L x 3.8"H

83

• 125 Watts RMS x 4 @ 4 ohm
• 250 Watts RMS x 4 @ 2 ohm
• Bridged: 500 Watts RMS x 2 @ 4 ohm
• Total Peak Power: 1000 Watts
• Variable high-pass filter: 60 - 1200 Hz
• Variable low-pass filter: 30 - 250 Hz
• Variable Bass Boost: 0 to +9 dB bass boost at 50 Hz
• Dimensions: 11.4"W x 14.2"L x 3.8"H

Crunch PD4000.4 4000w 4-Channel Pro Power Car Audio Amplifier Class AB+Amp Kit

4000W Max Power Drive Series 4-channel Bridgeable Car Amplifier - Pro Power Edition + Complete 4 Gauge Amplifier Wiring Kit Package

PD 4000.4 Pro Power, BAK42 big DISCONTINUED
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Crunch PD4000.4 4000w 4-Channel Pro Power Car Audio Amplifier Class AB+Amp Kit

4000W Max Power Drive Series 4-channel Bridgeable Car Amplifier - Pro Power Edition + Complete 4 Gauge Amplifier Wiring Kit Package

• 250 Watts RMS x 4 @ 4 ohm
• 500 Watts RMS x 4 @ 2 ohm
• 1000 Watts RMS x 2 @ 4 ohm Bridged
• Total Peak Power: 4000 Watts
• Variable high-pass filter: 60 - 1200 Hz
• Variable low-pass filter: 30 - 250 Hz
• Variable Bass Boost: 0 to +9 dB bass boost
• Dimensions: 11.4"W x 20"L x 3.8"H

84

• 250 Watts RMS x 4 @ 4 ohm
• 500 Watts RMS x 4 @ 2 ohm
• 1000 Watts RMS x 2 @ 4 ohm Bridged
• Total Peak Power: 4000 Watts
• Variable high-pass filter: 60 - 1200 Hz
• Variable low-pass filter: 30 - 250 Hz
• Variable Bass Boost: 0 to +9 dB bass boost
• Dimensions: 11.4"W x 20"L x 3.8"H

 
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