PZ-4020.1D Power Zone 4000 Watt Amplifier

Crunch PZ-4020.1D POWERZONE 4000 Watt Mono Amplifier 1 Ohm Stable Car Audio Amp.

$ 259.99

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SKU: 806576227816 Category:

POWERZONE mono subwoofer car amplifier highlighted with bright Crunch red heatsink elements feature SPEED-FET output devices and QTD Technology produces 4000 watts of power in a 1 ohm stable application. Bass remote is included.

Weight 10 lbs





Power Zone








1 Year

Compatible Vehicles


Amp Class

Class D

Amp Total Channels


Amp Max Power (watts)


Amp Power @ 1 Ohm (ch x watts)

1 x 4000

Amp Power @ 2 Ohms (ch x watts)

1 x 2000

Amp Power @ 4 Ohms (ch x watts)

1 x 1000

Amp Crossover

Variable, VeraCross

Amp Variable Low Pass Crossover 12dB per Octave


Amp Bass Boost


Amp Subsonic Filter


Amp Variable Voltage


Amp Signal to Noise

> 95dB

Amp Frequency Response


Amp Total Harmonic Distortion (THD)

< 0.10%

Amp Speaker Level Audio Inputs


Pre-amp Audio Outputs

Full Range, RCA

Amp Speaker Terminal Wire Gauge

Recommended, Spade Connector

Amp Fusing

80A x 1

Proposition 65 Notice WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Low Noise Preamplifier Circuit

Maximum low voltage signal from the source unit comes into the amplifier through a low voltage circuit which delivers minimal distortion through the amplification process.

RCA Inputs

Low voltage RCA inputs produce the highest sound quality connection with quality RCA materials helps prevent interference and minimize distortion in the signal path.

Operation Mode

Mono only

Crossover Type

Variable electronic crossovers allow for complete control of the sound.

Electronic Equalizer

Control of amplifier output with on-board electronic crossover to tailor specific frequencies to speakers and subwoofers. Check specifications for specific frequencies for this amplifier.

Class / Topology

Very efficient D-Class to drive additional power to subwoofer frequencies while remaining a small footprint.

Output Device Technology

Exclusive Crunch SPEED-FET MOSFET components maximize power efficiency while improving sound quality and minimizing distortion.

Heat Sink

QTD (Quick Thermal Dispersion) technology assures the amplifier makes huge power while running very cool with nearly undetectable musical distortions.

Power Supply

Rugged MOSFET Pulse Width Modulation power supply. Allows amplifier to product efficient power without taxing the vehicle electrical system.

Output Connections

Nickel-plated brass connectionwith hex set screw terminals allow for secure connection and resist erosion.

Connection Type

Secure connection for all power, ground and speaker connections.

Full-Range RCA Outputs for Signal Pass Through

Daisy chain multiple amplifier to eliminate additional signal cables from the source unit.

LED System Protection Circuitry Diagnostics

Monitor overload and speaker short protection with illuminated indicators on the amplifier end panel.

Bass Remote Included

Wired Bass Remote allows adjustments to bass frequencies from the control which can be mounted anywhere in the vehicle.

Coming Soon

Product documentation and files are not yet available.