Rockford Fosgate PM400X4 Punch Series 4-Channel Class-AD 400 Watt Marine/ Sports Amplifier

A powerful, versatile amp for your boat

Rockford Fosgate designed their PM400X4 4-channel amplifier for marine and Powersports applications. It'll power systems with front and rear speakers, it'll drive a couple of subs in 2-channel mode, or you can switch the amp to 3-channel mode to power a set of speakers and a subwoofer. 

Built tough for life on the water or off the road

Using a Class AB design, the PM400X4 delivers outstanding performance from a compact package. It's built to stand up to outdoor life, too, with conformal-coated circuitry that withstands moisture and dirt and stainless steel hardware that won't succumb to corrosion.

Rockford Fosgate also uses the innovative Maximum Efficiency Heat Sink Application (MEHSA3) construction process, which yields up to five times better heat transfer than traditional mounting techniques. As a result, this amp will rock out without overheating, even when tucked into a tight space.

The level setting made easy

The PM400X4 uses Rockford Fosgate's CLEAN level setting technology, so there's no more guesswork while setting your gain levels. Easy-to-see LED indicators identify clipping so you can set your amp up for maximum performance while eliminating distortion.

Product Features:

• Element Ready Power Series Class-AD 4-Channel Amplifier
• R4-Channel Punch Series Class AB Marine 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.
• Dynamic Power:
• 4 ohms 0° Res : 82 watts x 4 chan.
• 2 ohms 0° Res : 137 watts x 4 chan.
• Bridged 4 ohms 0° Res: 266 watts x 2 chan.
• Includes a Rockford Fosgate Performance Verification Certificate
• w/ Inspection Data & Actual Power Rating, (aka "Birth Sheet")
• CEA-2006 compliant amplifier
• CE Compliant
• LED power (blue) and protect (red) indicators
• Features C.L.E.A.N. Set-up with 10-step set-up procedure
• Muted turn on
• Stealth top mounted control panel
• Cast aluminum heatsink
• Short circuit protection
• Over current protection
• Marine-grade two part epoxy coating on circuit boards
• Marine grade stainless steel hardware
• Preamp RCA outputs to daisy chain multiple amps
• Balanced Differential Inputs, to eliminate noise picked up by signal cables
• Protected against Dust, UV, & Corrosion
• Dynamic Thermal Management evenly distributes excess heat across entire amplifier heatsink.
• Features MEHSA3 (Maximum Efficiency Heat Sink Application - gen3)
• High level input capable with Auto Turn-On circuit:
• Requires Rockford Fosgate RFIF2SW, sold separately
• Optional remote Punch Level Control (PLC2) ready (w/ input clip indicator)
• Input sensitivity: 150 mV - 12 V
• Frequency Response: 20 - 20,000 Hz
• Efficiency (average): 67% @ 4-Ohm
• Total Harmonic Distortion (THD): <1.0%
• Punch EQ Bass: 0 - +18dB boost @ 45Hz.
• Punch EQ2 Treble: 0 - +12.5dB @ 12.5kHz
• 12dB/octave Butterworth crossover (selectable)
• Variable high-pass filter: 50 - 250 Hz, 12 dB/octave
• Variable low-pass filter: 50 - 250 Hz, 12 dB/octave
• Recommended Fuse Rating: 60A x 1 inline (not included)
• Operating Voltage: 9 - 16 VDC
• Max Current Draw: 60 A
• Average Current Draw: 30 A
• Power Wire Gauge: 4 AWG - 8 AWG
• Speaker Wire Gauge: 8 AWG - 18 AWG
• 4 gauge OFC power and ground wiring is recommended for installation. 
• Dimensions: 7.76"W x 11.03"L x 2.38"H
• Authorised Internet Dealer
• 1-year Manufacturer's Warranty