Crunch PX-1000.4 4 Channel 1000 Watt Class A/B Car Stereo Power Amplifier Black for vehicle audio
Crunch PX-1000.4 4-Channel 1000-Watt A/B Class Car Stereo Power Amplifier
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Crunch

Crunch PX-1000.4 4-Channel 1000-Watt A/B Class Car Stereo Power Amplifier

|45 ratings

Key item features

  • Flexible Power: This 4-channel car amplifier delivers configurable power output, providing 4 x 250 watts at 2 Ohms or 4 x 125 watts at 4 Ohms, accommodating both stereo and four-channel audio setups.
  • Efficient Cooling: Features full Class A/B operation with QTD (Quick Thermal Dispersion) technology and added aluminum on the heatsink, supporting cooler and more efficient amplifier performance during operation.
  • Adjustable Audio Filters: Includes variable high-pass filtering from 120 to 3,000 Hz and low-pass filtering from 50 to 250 Hz, along with a variable bass boost of 0 to +12 dB at 45 Hz for precise sound control.
  • Versatile Connectivity: Equipped with speaker-level inputs for seamless integration into existing vehicle audio systems and preamp RCA outputs that enable daisy chaining of multiple amplifiers.
  • Compact Dimensions: The chassis measures 12.6 x 10.8 x 3.7 inches and weighs 5.4 lb, providing a practical size for various vehicle audio installation and fit planning.
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Specs

Brand, CrunchRms power rating, 1000 WChannels, 4Impedance, 2 ohmPeak audio power handling, 5000 WInput/output type, RCA

About this item

Product details

PX-1000.4 is a four-channel car audio amplifier with full Class A/B operation for stereo and four-channel configurations. Its output ratings are 4 x 250 watts at 2 Ohms and 4 x 125 watts at 4 Ohms. QTD, or Quick Thermal Dispersion, technology adds aluminum to the heatsink to support heat dispersion during operation. A pulse-width-modulated power supply and SEPP, or Single Ended Push Pull, output technology define the power section. LED power and protect indicators show operating status, while slow-unmute soft-start turn-on controls startup behavior. Level inputs connect the unit to compatible vehicle audio systems, and preamp RCA outputs allow daisy chaining multiple amps. Variable high-pass filtering ranges from 120 to 3,000 Hz, and variable low-pass filtering ranges from 50 to 250 Hz. Variable bass boost provides 0 to plus 12 dB at 45 Hz. The chassis measures 12.6 x 10.8 x 3.7 in and weighs 5.4 lb.
  • Flexible Power Ratings: Delivers 4 x 250 watts at 2 Ohms or 4 x 125 watts at 4 Ohms for configurable four-channel car audio output.
  • Class A/B Cooling: Full Class A/B operation pairs with QTD technology and added aluminum on the heatsink to support cooler amplifier operation.
  • Adjustable Frequency Filters: Variable high-pass filtering covers 120 to 3,000 Hz, while low-pass filtering covers 50 to 250 Hz.
  • System Connection Options: Speaker-level inputs and preamp RCA outputs support audio integration and daisy chaining multiple amps.
  • Installation Size: The chassis measures 12.6 x 10.8 x 3.7 in and weighs 5.4 lb for vehicle audio fit planning.
info:
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Specifications

Brand

Crunch

Rms power rating

1000 W

Channels

4

Impedance

2 ohm

Warranty

Warranty information

1 year warranty

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Warnings

Customer ratings & reviews

4.3 out of 5 stars
stars
45 ratings24 reviews
Includes global ratings and reviews
How item rating is calculated
  1. 5 stars73% (33)
  2. 4 stars11% (5)
  3. 3 stars2% (1)
  4. 2 stars0% (0)
  5. 1 star13% (6)
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Showing 1-3 of 24 reviews

Aug 13, 2025
Reviewer name: chupa
Item details
Color: Black
Sold and shipped bySpreetail
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

sound quality is excellent. Price is good. and you be disappointed

Helpful?4OY5ZVREY8AW49532820
Jul 14, 2025
Reviewer name: Deb
Item details
Color: Black
Sold and shipped bySpreetail
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

fast shipping, heavy duty quality installation was quick and simple

Helpful?4OY5ZVREY8AW49532820
Dec 31, 2020
Reviewer name: HonestPointOfView
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Exceptional amp

Corrections needed for "About This Item": Power Output Mono Bridged @ 4-OHMS: 2 x 500 watts, NOT 2 x 5000 watts There are NO "Preamp RCA outputs to daisy chain multiple arms (sic amps)" Use properly sized 12V DC power cable and chassis/ground connection to eliminate overheating issues. Be sure to set the Min/Max GAIN adjustment to match the signal outputs from the receiver/head unit.

Helpful?4OY5ZVREY8AW49532820
Current price is $81.99
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