Rockford Fosgate Punch P400X4 4-Channel Amplifier
Key features
- Amplifier channels: 4
- RMS per channel at 4 ohms: 50 W
- RMS per channel at 2 ohms: 100 W
- Frequency response: 20 Hz–20 kHz
- Input sensitivity: 150 mV–12 V
- Crossover: variable 50–250 Hz high-pass/low-pass, 12 dB/octave
Rockford Fosgate Punch P400X4 4-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Rockford Fosgate Punch P400X4 4-Channel Amplifier is backordered and will ship as soon as it is back in stock.
Description
Description
Product Overview
The Rockford Fosgate Punch P400X4 4-channel amplifier gives you flexible power for a multi-speaker car audio system. Use its four channels for speakers, or bridge paired channels for a front-stage and subwoofer setup.
Onboard crossover and PUNCH EQ controls let you shape the signal for your system. High-level inputs and Auto Turn-On also support integration with a factory radio.
Key Features & Benefits
- Four-channel design: Run four speakers or bridge channels for a two-channel setup.
- Selectable power options: RMS ratings cover 4Ω and 2Ω loads, with a bridged 4Ω rating for paired channels.
- 12 dB/Octave Butterworth crossover: Separate bass from midrange and high frequencies to help direct sound to the appropriate speakers.
- PUNCH EQ: Adjust bass presence with a +18 dB boost at 45 Hz.
- Factory-radio integration: High-level input and Auto Turn-On allow operation without a dedicated remote sense wire.
- Setup and status indicators: C.L.E.A.N. Setup, clip LEDs, and Power/Protect/Thermal indicators help with alignment and monitoring.
Technical Specifications
| Specification | Details |
|---|---|
| Model | Punch P400X4 |
| Number of channels | 4-channel |
| Rated power (RMS) | 50 Watts x 4 @ 4Ω; 100 Watts x 4 @ 2Ω; 200 Watts x 2 @ 4Ω |
| Bridged Dynamic Power | 82 Watts x 4 @ 4Ω; 137 Watts x 4 @ 2Ω; 266 Watts x 2 @ 4Ω |
| Crossover | 12 dB/Octave Butterworth |
| PUNCH EQ | +18 dB boost at 45 Hz |
| Inputs | 2 RCA input pair; high-level input |
| Connections | Captive C-Clamp speaker and power connections; 8 AWG–18 AWG input/output |
| Turn-on feature | Auto Turn-On |
| Topology | Class A/B |
| Average efficiency | ~67% at 4Ω |
| Operating range | 9–16 VDC |
| Protection | Short circuit protection and over-current protection |
| Cooling and construction | Cast aluminum heatsink with convection cooling |
| Controls and indicators | Stealth top-mounted control panel; Power/Protect/Thermal LED indicators; input/output clip LEDs |
| Compliance | CTA-2006 compliant |
| Dimensions | 2.38" H x 7.76" W x 11.03" D (6.05 x 19.71 x 28.02 cm) |
| Shipping weight | 10.8 lb (4.89 kg) |
| Recommended fuse | 60 A (not included) |
Why Choose This Product?
The P400X4 can serve a four-speaker front stage with rear fill, or a three-way front stage plus subwoofer configuration. Its crossover and bass adjustment give you options for shaping the system, while the top-mounted controls keep adjustments accessible yet discreet after installation.
Short circuit and over-current protection, plus convection cooling, are built into the amplifier. The clip and status indicators give you a quick visual reference during setup and operation.
Installation & Compatibility Notes
- Plan around the dimensions: The amplifier measures 2.38" H x 7.76" W x 11.03" D.
- Check your system load: Match speaker loads and channel configuration to the listed power ratings before wiring.
- Allow for the fuse: The recommended fuse is 60 A and is not included.
- Check electrical requirements: The operating range is 9–16 VDC.
Frequently Asked Questions
Can the P400X4 power four speakers?
Yes. It has four channels and is rated at 50 Watts x 4 @ 4Ω or 100 Watts x 4 @ 2Ω RMS.
Can I bridge channels for a subwoofer?
Yes. The listed bridged RMS rating is 200 Watts x 2 @ 4Ω. Confirm your speaker load and wiring configuration against the amplifier’s requirements.
Can it connect to a factory radio?
Its high-level input supports factory-radio integration, and Auto Turn-On allows operation without a dedicated remote sense wire.
What fuse does it require?
The recommended fuse is 60 A. The fuse is not included.
Will it fit my vehicle?
Compare the available installation space with the amplifier’s dimensions: 2.38" H x 7.76" W x 11.03" D.
Explore More
Shop the Rockford Fosgate Punch P400X4 at 12 Volt Outlet. Want to learn more about Rockford Fosgate? Explore our Rockford Fosgate brand profile.
