Name: Rockford Fosgate® Punch 400 Watt 4-Channel Amplifier
Brand: Rockford Fosgate
SKU: 87077
Availability: BackOrder

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Versatile

The Punch P400X4 is a 4-channel amplifier producing 100 Watts into all four channels at 2-Ohm. The P400X4 is perfect for a 4-way full-range system or a 3-way system having a front stage with subwoofers on the rear channels.

Rockford Fosgate® Punch 400 Watt 4-Channel Amplifier-P400X4

Rockford Fosgate® Punch 400 Watt 4-Channel Amplifier

The P400X4 is perfect for 4-way front-stage/rear-fill or 3-way front-stage/subwoofer systems. Simply drop a pair of component speakers on the front channels and subs on the rear and BOOM - you got "The PUNCH." With its flexible design, the P400X4 is an excellent amplifier choice for virtually any vehicle.

High level input capable with Auto Turn-On circuit

On-board Punch EQ with +18dB boost @ 45Hz

The KTP-445U Universal Power Pack amplifies both an aftermarket or factory installed head unit power output, resulting up to a 150 percent power increase over the original power from the head unit's built-in amplifier.

Alpine® 4 Channel Universal Power Pack Amplifier-KTP-445U

Alpine® 4 Channel Universal Power Pack Amplifier

Add higher output and more dynamic response with this easy-to-install Universal Power Pack upgrade.

For aftermarket and factory installed systems

Compact size lets the KTP-445U fit where most amplifiers won’t. The KTP-445U comes equipped with the RCA and Auto-Sensing-Speaker level connectors and it fits behind the head unit in the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. The size and flexible wires make the Power Pack an easy choice to save space.

Independent Filters For Rear and Front Inputs

High-Pass selectable switches for Front & Rear allow frequency filtering for a wide variety of speakers. Choose from full range to selectable range: 60Hz, 80Hz or 120Hz to fine-tune your crossover points.

Need configurable options for Speaker-Level or RCA inputs to the Power Pack? On the bottom panel of the Power Pack there are selectable input options to accommodate Speaker-Level (0.5V-10V) or RCA (0.2V – 4V) inputs. Selectable 2 Channel and 4 Channel options give you the control to determine source inputs, and can eliminate the need for Y-adapters.

The Power Pack provides simple variable gain controls on the end panel for flexibility and a wide variety of system applications.

Best Signal-To-Noise Contender In Its Class

In order to ensure that Alpine sound quality is heard at your ears, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.

Total Harmonic Distortion (THD+N) Vs. Frequency

Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. - < 0.03% THD+N @ 1W, 1% THD+N @ rated power.

The KTP-445A Power Pack amplifies power output on select 2005 and newer Alpine head units, resulting in up to a 150 percent power increase over the original power from the head unit's built-in amplifier.

Alpine® 4-Channel Power Pack Amplifier-KTP-445A

Alpine® 4-Channel Power Pack Amplifier

Add higher output and a more dynamic response with this easy-to-install Alpine head unit Power Pack upgrade.

For select 2005 and newer Alpine head units

Compact size lets the KTP-445A fit where most amplifiers won’t. The KTP-445A comes equipped with direct plug-in connectors for select 2005 and newer Alpine head units and it fits behind the dash of most vehicles. It's small and compact at only 7-7/16” x 1-1/2” x 2-1/2”. Its size and flexible wires make the Power Pack an easy choice to save space.

In order to ensure that Alpine sound quality is heard, we’ve created a platform that offers an unbelievably low noise floor, taking extra care to ensure a clean signal path, with no extraneous interference. The end result: The Power Pack boasts 1 Watt Signal-to-Noise Ratio of 82dB or better.

Total Harmonic Distortion (THD+N) vs. Frequency

Uniquely, the Power Pack distortion actually decreases at higher frequencies, resulting in a clean and clear signal where your ear is most sensitive to distortion. - <0.03% THD+N @ 1W, 1% THD+N @ rated power.

The Power T400-4 is a 4-channel amplifier capable of producing 100 Watts into each of its four channels at 2-Ohms. The T400-4 can run a 4-way full-range system or use component speakers on the front with subwoofers on the rear.

Rockford Fosgate® Power 400 Watt 4-Channel Amplifier-T400-4

Rockford Fosgate® Power 400 Watt 4-Channel Amplifier

The T400-4 amplifier is perfect for front/rear fading stereo systems or when dedicated amplification is required between front stage speakers and rear subwoofer(s). Thanks to the Dynamic Thermal Management, the small chassis design insures it can be installed in any location – like under front seats.

The Punch PBR300X4 is a 300 Watt full-range amp designed for compact systems. This efficient 4-channel amp packs a Punch in motorcycles, ATVs and hybrid-electric vehicles without sucking a lot of juice from your electrical system.

Rockford Fosgate® Punch 300 Watt BRT Full-Range 4-Channel Amplifier-PBR300X4

Rockford Fosgate® Punch 300 Watt BRT Full-Range 4-Channel Amplifier

The Rockford PBR300X4 is a full-range 4-channel amplifier designed for stereo front/rear systems that requires little space. The BRT (Boosted Rail Technology) is an ultra efficient design that generates 300 Watts of power! The BRT also has a variable hi-level DC offset turn-on circuit for easy installation into any OEM system. Great for motorcycles and recreational vehicles.

Variable 4-6 volt hi level DC offset voltage input turn-on control

4K Ultra HD TVs

Home Electronics

Game & Media Room

Car Electronics

Car Subwoofers

Car Alarms & Remote Starts

LED Light Bars

Cameras

Outdoor TVs

Noise Canceling Headphones

Car Receivers

Car Speakers

Car Amplifiers

Car Signal Processors & Crossovers

Satellite/FM/AM Tuners

Stereo Speakers

Voice Control Assistants

8K Ultra HD TVs

Camera Accessories

Lens Filters

Audio Connectors

Multi-Room Accessories

Turntable Accessories

Surround & Rear Speakers

Wires & Cables

RCA Cables

USB Cables

TV Stands & Entertainment Centers

Media Consoles

TV Stands

Our Catalog

Media Chests

Media Furniture

Entertainment Centers

Full HD (1080p) TVs

Hidden TV Categories

Flat TVs

Indoor TVs

Bulk Spool Wire

Cable Accessories

Cable Adapters

Cable Connectors

Headsets

Non-Noise Cancelling Headphones

Audio Component Parts

Portable Speaker Charging Accessories

Speaker & Subwoofer Controls

Audio Power Cables

Headphone Charging Cases & Cables

Turntable Cartridge

Car Satellite Radio Receivers

Car Alarms

Car Security Accessories

Car Motion Sensors

Car Sirens

Back-Up Cameras

Car DVD Players

Dash Cameras

Indoor Speakers

Wired Speakers

Marine & Powersports Electronics

Marine Receivers

Marine Speakers

Marine Amplifiers

Marine Subwoofers

Marine Accessories

ATV/UTV Receivers

ATV/UTV Speakers

ATV/UTV Amplifiers

ATV/UTV Subwoofers

ATV/UTV Accessories

Audio Systems

Audio & Video Cables

Car Audio Packages

Car CD Receivers

Car DVD Receivers

Car GPS Navigation Receivers

Car Digital Media Receivers

Up to 8" Subwoofers

10" Car Subwoofers

12" Car Subwoofers

3.5" Car Speakers

4" Car Speakers

4" x 6" Car Speakers

5.25" Car Speakers

5" x 7" Car Speakers

6.5" Car Speakers

6" x 8" Car Speakers

6" x 9" Car Speakers

Additional Car Speaker Sizes

Tweeter Car Speakers

Mono Subwoofer Amps

2-Channel Amps

4-Channel Amps

5+ Channel Amps

Car Digital Sound Processors

Overhead DVD & Video

Car Speaker Boxes and Enclosures

Car Speaker Powered Enclosures

Car Speaker Loaded Enclosures

Car Speaker Enclosures

Car Audio & Video

Driver Safety & Security

Car Cameras

Car Lighting

Car Lighting Accessories

Car Keyless Entry

Car Remote Starts

Car Alarm with Remote Start

Marine & Powersports Audio Packages

Lamp Projectors

LED Projectors

Long Throw Projectors

Short Throw Projectors

Laser Projectors

Framed TVs

Furniture

Living Room

Bedroom

Headphones

LED TVs

LCD TV

Projectors

Blu-ray Players

Receivers & Amplifiers

Speakers

Audio Accessories

Home Theater System

Home Theater Receivers

Stereo Receivers

Power Amplifiers

Multi-Room Audio

Integrated Amplifiers

CD Players

Center Channel Speakers

Sound Bars

Floor Standing Speakers

Bookshelf Speakers

Subwoofers

In-Wall Speakers

Outdoor Speakers

Speaker Stands & Mounts

Wired Headphone

Wireless Headphone

Headphone Accessories

Audio Components

Streaming Music Players

Mini & Micro Audio Systems

OLED TVs

Soundbar Systems

Turntables

Preamplifiers

On-Wall Speakers

In-Ceiling Speakers

In-Ear & Earbud Headphones

Color	Black
Depth (in.)	11.03
Width (in.)	7.76
Height (in.)	2.38
Amplifier Class	Class AB
Amplifier Output (Watts)	400
Bluetooth Capable	No
Amplifier Channels	4
Impedance	2 - 4 Ohms
Manufacturer Warranty	1 Year
RMS Power Handling (Watts)	200
Water Resistant	No
Digital Input	No
Shallow Mount	No
Speaker Level Input	Yes
Number Of Outputs	2
Minimum Impedance Unbridged	2 Ohm
Collection	Punch
Number Of Inputs	2

Rockford Fosgate® Punch 400 Watt 4-Channel Amplifier

Model #: P400X4

At a Glance

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