Rockford Fosgate P400X4 400W RMS Punch Series 4-Channel Class AB Car Power Amplifier

Big power for your speakers or subwoofers

Rockford Fosgate's Punch P400X4 amplifier can put out 50 watts RMS to each of your front and rear speakers, plenty of power for clean music even at high levels. You can use the amp's high-pass filter to remove low bass from your speakers so they'll play more efficiently. You can also switch this amp into 2-channel mode to drive a couple of subwoofers with up to 200 watts RMS each. The amp's low-pass filter comes in handy for getting the right sound from your sub/enclosure combo. The Punch EQ2 includes bass and treble boosts, in case you want to add some boom and sizzle back into the mix.

Easy to set for optimum performance

P300X2 control panel shown as an example

Once again, Rockford Fosgate steps away from the crowd with their C.L.E.A.N. technology (Calibrated Level Eliminates Audible Noise) — a setup system that ensures your music will sound as clean and powerful as possible. It works like this: play the setup tone on the included test CD, adjust the receiver volume until a red clip light on the amp goes out, then turn the amp gain up until a blue light comes on. It's that simple — your amplifier is now set to match your receiver's output. When your receiver reaches maximum clean volume, you'll get maximum clean power from your Punch amp. At quiet listening levels, you'll hear less background noise and more of your music.

Keeps an eye on things while playing

If that blue light turns solid red while you're playing music, the amp's telling you that your source is distorting and you should turn it down, or risk damage to your gear. The amp's built-in computer keeps tabs on the output current, ensuring that plunging speaker impedances (they change during play) or even a short circuit won't hurt anything.

Maintaining coolness raises efficiency and lowers distortion

Rockford Fosgate's Dynamic Thermal Management system uses forced air to dissipate heat evenly across the amp and out through the high-mass heatsink, efficiently drawing heat away from vital internal parts. Their proprietary MEHSA cooling process maximizes the heat transfer from the MOSFET devices to the heatsink, allowing the heat to escape more readily, so the transistors stay cooler and work better.

Product Features:

• Punch Series 4-Channel Class AB Car Amplifier
• RMS Power Rating:
• 4 ohms: 50 watts x 4 chan.
• 2 ohms: 100 watts x 4 chan.
• Bridged, 4 ohms: 200 watts x 2 chan.
• MOSFET power supply
• Remote bass level input (remote level control sold separately)
• LED power, thermal, and protect indicators
• Tuned Bass EQ (0-18 dB bass boost at 45 Hz or 0-14 dB bass boost at 12 kHz depending on crossover selection)
• On-board differential inputs eliminate noise picked up by the signal cable
• 4/3/2 or Mono channel operation
• Integrated Trans•ana technology simplifies the signal path of the amplifier allowing the signal to travel through the amplifier at a lower voltage. The result is greater reliability and exceptional sound quality
• RCA Pass-thru outputs
• MESHA3 reduces MOSFET temperatures, lowers distortion, increases durability, and prolongs the output device life span
• DSM (Discrete Surface Mounted Components) utilize 1% tight-tolerances improving the efficiency of the circuit and lowers operating temperature and potential for noise - similar to circuit boards designed by aerospace manufacturers
• Built in NOMAD is a "real time" analog computer that protects your amplifier from shorting speaker wires and dangerously low speaker impedances
• Cast aluminum convection heatsink with DTM (Dynamic Thermal Management) evenly distributes excess heat across entire amplifier heatsink to efficiently keep the amplifier temperatures low
• Nickel-plated RCA level inputs
• Nickel-plated captive C-clamp terminals
• Variable high-pass filter (50-250 Hz, Butterworth, 12 dB/octave)
• Variable low-pass filter (50-250 Hz, Butterworth, 12 dB/octave)
• CEA-2006 compliant amplifier
• Frequency response: 20-20000 Hz
• Dimensions: 11"L x 7-3/4"W x 2-3/8"H
• 4-gauge power and ground leads recommended.
• Full Manufacturer's Warranty

What's in the box:

• 4-Channel amplifier
• Four 1-1/2" Self-tapping screws
• 2.5mm Allen wrench
• Quick setup instructions
• Certificate of Performance

Product history:

	Rockford Fosgate Punch P400X4 (newest, current model)
	Rockford Fosgate P4004 (previous model, replaced by Rockford Fosgate Punch P400X4)