Rockford Fosgate keeps making a good thing better with Punch amps — and you'll find one for every type of car audio system, from mild to wild.

Rockford Fosgate continues its commitment to outstanding design with the 2-channel Punch P450.2 amplifier. Specially-designed transistors perform better than the "off-the-shelf" models most manufacturers use. Additional heatsink material keeps these critical power components running cooler, reducing distortion and increasing amp efficiency.

The P450.2 delivers the power you need to kick up the performance of full-range or component speakers, or you can run it in single-channel mode to send 450 watts to your subwoofer. The variable frequency filters adapt the amplifier to fit the job at hand, while the wired Punch Bass EQ kicks up the lows when it's time to get the car shaking.

Product Highlights:

  • 2-channel car amplifier
  • 100 watts RMS x 2 at 4 ohms (225 watts RMS x 2 at 2 ohms)
  • 450 watts RMS x 1 in bridged mode (4-ohm stable in bridged mode)
  • variable high- and low-pass filters (40-400 Hz, 12 dB per octave)
  • wired Punch Bass EQ (0-18 dB at 45 Hz)
  • Focused Mass Heatsink design
  • removable connector cover
  • special-design TO-247 MOSFETs run cooler than standard transistors
  • CEA-2006 compliant
  • preamp inputs and outputs
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 11-3/4"W x 2-1/8"H x 11-1/16"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Hands-on research

What's in the box?

Download owner's manual

  • Two channel amplifier
  • One 7/64" Allen wrench
  • Four 3/4" Self-tapping screws
  • Remote Punch Bass controller
  • Remote mounting bracket
  • Two 3/8" Self-tapping screws
  • 16.25' Flat remote cable (with RJ-45 plugs on both ends)
  • Installation & Operation manual (English/French/Spanish/German/Italian)
  • Punch Amplifier Performance Verification Certificate

Product Research

Features
Input and Output Notes
Specifications
Warranty
Fuse Note

Features

Removable Cover: The Rockford Fosgate Punch P450.2 amplifier features a removable terminal cover. It conceals all speaker, signal, remote, power, and ground connections, as well as the gain and crossover frequency controls for a cleaner installation.

Cast Aluminum Heatsink: The Focused Mass cast aluminum heatsink dissipates heat generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

INDIGO (INDexed Ideal Gain Operation): The INDIGO PWM (pulse width modulation) power supply is designed to make the most of the situation it is presented with. When battery voltage is low, you are guaranteed to get the power you paid for. When voltage increases, the amp makes even more power.

MEHSA (Maximum Efficiency Heat Sink Application): MEHSA is a Rockford Fosgate proprietary process that increases the heat transfer from the MOSFET devices to the heatsink. The multi-layer insulated metal MEHSA substrate operates with minimal thermal resistance, spreading heat both downward and outward to quickly dissipate heat from each device across the heatsink. This allows greater power output, enhanced thermal stability, and maximum reliability.

TOPAZ (Tracking Operation Pre-Amplifier Zone): TOPAZ is a circuit that eliminates noise. The TOPAZ circuit prevents ground loops by allowing the output impedance of the source unit to determine the signal ground impedance the amp sees. This virtually assures that the signal ground out of the head unit and the signal input ground of the amplifier are identical, eliminating any chance for a ground loop. The result is a 30-40dB improvement of the isolation between input ground and chassis ground.

Trans-ANA (TRANSconductance Active Nodal Amplifier): The trans-ANA is a circuit that allows the audio signal to pass through the amplifier at low voltage. The signal is directly level-shifted to the fixed high voltage rails via a pair of drive transistors. Signal linearity is assured by an active node formed  by the drive transistors at ultrasonic frequencies. The result is crystal clear sound quality.

NOMAD (NOn-Multiplying Advanced Decision): NOMAD is an intelligent protection circuit that uses an analog computer to make real time decisions regarding temperature, voltage, current and impedance. The unit is protected without limiting sound output unless needed.

DSM (Discrete Surface Mount): In the manufacturing process high speed robotics are used to place 0% tolerance resistors and large board traces providing greater reliability and efficiency.

TO-247 MOSFET: The Punch P450.2 utilizes ultra high performance MOSFET output devices, giving the amplifier more power handling capability as well as lower thermal impedance for more reliable operation, even under the harshest load conditions.

Internal Crossover: The amplifier's internal crossover is a 12dB/octave Butterworth filter selectable for high-pass, all-pass (full range) or low-pass operation variable from 40Hz to 400Hz.

Remote Punch Bass: The Punch Bass helps correct for acoustical deficiencies in the listening environment by helping reproduce full range sound without adding excessive boost. The Punch Bass control has a narrow band adjustment centered at 45Hz, variable from 0dB to +18dB. The supplied Punch Bass wired remote can be mounted in a variety of locations. The module's case can be removed and positioned with the mounting bracket above or below the module. Without the case the module can be flush mounted in your vehicle's dash (requires a 2" x 7/8" cutout with a maximum panel thickness of 3/8"). The wired remote is 2.294" wide, 1.293" tall and 1.509" deep (2.606" including the knob and cable connection). The included cable is 16.25' long.

RCA Pass-Thru Jacks: The pass-thru jacks provide a convenient source for daisy-chaining an additional amplifier without running an extra set of RCA cables from the front of the vehicle to the amplifier location. The pass-thru jacks output a full-range signal.

Power Indicator and Protection LEDs: There are three LEDs on the top of the amplifier. A blue LED illuminates when the unit is turned on. A yellow Protect LED illuminates if a short circuit or too low an impedance is detected at the speaker connections. A red Thermal LED illuminates if the amplifier overheats. The amplifier will automatically shut down if either the yellow or red LED indicates amplifier trouble.

Input and Output Notes

Power Connections: The power and ground terminals are nickel-plated captive c-clamp wire connectors and will accommodate up to 4-gauge wire. The remote turn-on terminal will accept wire sizes of 12- to 24-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Speaker Connections: The nickel-plated clamp wire connectors will accept wire sizes of 8- to 18-gauge. A Phillips-head or slotted screwdriver (not supplied) is required to tighten/loosen the terminals.

Remote Punch Bass Connection: An RJ-45 jack is provided for connecting the supplied Remote Punch Bass cable.

Specifications

CEA-2006 Compliance: The specifications given by Rockford Fosgate for the Punch P450.2 amplifier comply with the new CEA-2006 Amplifier Power Standard from the CEA (Consumer Electronics Association). All manufacturers who comply with the standard can display the CEA-2006 logo on their product.

Performance Verification Certificate: Each amplifier comes with a Performance Verification Certificate which lists the results of a 10-point performance inspection as well as a measurement of the actual power output of that amp.

Warranty

Extended Warranty: A one year warranty extension, for a total of two years, is provided by Rockford Fosgate when this amp is wired using a qualifying Rockford Fosgate amplifier wiring kit. Qualifying wiring kits include the CP4POS CP4CKDS.

Fuse Note

Fuses: The P450.2 has two 30 amp fuses. Like the other amps in the series, one fuse is under the terminal cover, to the right of the power connections. The second fuse is under the main circuit board cover.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Rockford Fosgate Punch P450.2 Reviews

Average Customer Review:

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wow...

Written By Matt, Lebanon, Ohio on Friday, September 12, 2008

This amp is great. I have it powering a T110D2 bridged to 4 ohms, and it sounds great. I had a little trouble at first with the thing shutting off, but that was because of the way my buddy was controlling it with my 9884 Alpine. Called Rockford, and within 2 days, it was fixed and sounding better than ever. It's absolutely awesome, doesn't take up much space, and this set-up hits like no other. I have the gain around 2/3-3/4 and the sub is sealed and it's much louder than my buddies 2 P2's in a ported box with a 780 watt amp maxed out... oh, and according to my birthsheet, it's putting out 478 rms at it's current setting...

So far so good

Written By Chad, Miami Beach, FL on Thursday, August 02, 2007

Crutchfield Customer Review (What's this?)

SO far so good. This amp seems to be just right for my 2 RF 12's. Its only the first day so I cant be sure on durability but the sound is definately powerful and clean. Definately more power than the posted wattage too. The 450 was just right b/c I didnt feel the 400 was enough power and the 500 costs so much more. If it holds up, best amp for the price for sure

Not Great

Written By IGO, Las Vegas on Tuesday, July 03, 2007

I replaced a 50x2 @ 4ohm KAC something Kenwood amp of 15 year vintage with this amp. The Kenwood is much more musical and after setting the gain back on the RF to a point that noise was no greater than the kenwood with optimum gain, there was no difference in SPL. Proof is in the mush. RF is made to be loud, others are more pleasing to listen to.
I put my old Kenwood amp back in my truck.

great, clean, powerfuly amp

Written By mtp, Los Angeles on Thursday, June 21, 2007

Crutchfield Customer Review (What's this?)

have this amp bridged to 4 ohms (450rms)powering two rockford 12" p2s and it does it perfectly (have the pl2 212 box/subs) for the price and what i've seen from it so far, i dont think theres a better amp for this price

hasnt gotten hot or even that warm yet, and i use it all the time. the bass boost control really pumps up the bass and im pretty sure my rear view mear is going to fall off soon

Rockford Fosgate Punch P450.2

Written By Jason, Chicago (in the burbs...) on Wednesday, May 17, 2006

Crutchfield Customer Review (What's this?)

All I can say is WOW! I have this amp powering 2 8" Kicker compVR's with dual 4ohm voice coils. I wanted a decent sub amp that didn't take up too much space in my truck. I have a 2004 F150 super cab.

For you guys that have this same truck, you can actually fit this amp and the P450.4 both behind the rear seat back. As long as you mount them on the passenger side. There is also plenty of room for a 1 farad stiffening cap behind the seat back on the drivers side.

Anyway, you will definately not be dissapointed with a Rockford amp! The birth certificate for mine showed actual tested power to be 195 watts x 2 @ 4 ohms!!! The amp is only rated to be 100 x 2 @ 4 ohms, so that is almost double it's rated output, incredible! $300.00 is a steal for this amp!

Get everything you’ll need to enjoy your new Rockford Fosgate Punch P450.2

You'll need an amp wiring kit to install your new amplifier, as wiring is not included.
Bring the music from your amp to your speakers.
Patch cables take the music from your stereo to the amplifier. Most amp wiring kits don't include them.
Helps protect your car's charging system and improves power handling. Required power and ground wires not included with cap.
The right tools will make the installation easier.
Have your new amplifier put in by a qualified professional in your area.
Rockford Fosgate RFK4X

Rockford Fosgate RFK4X

Complete 4-gauge amplifier wiring kit
Includes patch cable and speaker wire

Item #: 575RFK4X

(12)

$159.99
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Rockford Fosgate RFK4

Rockford Fosgate RFK4

4-gauge amplifier power wiring kit

Item #: 575RFK4

(10)

$114.99
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T-Spec 12-gauge Speaker Wire

T-Spec 12-gauge Speaker Wire

Black/white jacket — priced per foot

Item #: 120SW12WB1

(30)

EFX 2-Channel RCA Patch Cables

EFX 2-Channel RCA Patch Cables

Reference Series Multi-Core RCA patch cables — available in 5 different lengths (25-foot)

Item #: 142RR25

$31.95
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T-Spec 2-Channel RCA Patch Cables

T-Spec 2-Channel RCA Patch Cables

Available in 7 different lengths (10-foot)

Item #: 120RCA102

(27)

$14.99
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T-Spec Capacitor

T-Spec Capacitor

1.5-farad capacitor with red LCD meter

Item #: 12015DDC

(11)

$79.99
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S&G Tool Aid 87650

S&G Tool Aid 87650

Door Trim and Panel Removal Tool

Item #: 18187650

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Skewdriver Pro SPK4042

Skewdriver Pro SPK4042

Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)

Item #: 180SPK4042

(8)

$49.99
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Metra Crimp Tool and Connectors

Metra Crimp Tool and Connectors

Package contains crimp tool and over 150 pieces

Item #: 120CRIMPKT

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S&G Wire Cutter/Stripper Tool

S&G Wire Cutter/Stripper Tool

Cuts and strips 12- to 22-gauge wire

Item #: 18119100

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InstallCard: Amp or Equalizer

InstallCard: Amp or Equalizer

Prepaid professional amplifier or EQ installation

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