The PM400X4 is a 400 Watt 4-channel amplifier with high dynamic power using Class-a/b technology and a conformal coated pc board designed for motorsport and marine applications. The PM400X4 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 PM400X4 is an excellent amplifier choice for virtually any vehicle.
General Features:
      - High level input capable with Auto Turn-On circuit
      - Features C.L.E.A.N. Set-up
      - 12dB/octave Butterworth crossover
      - On-board Punch EQ with +18dB boost @ 45Hz
      - 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
  
                         
                                            
                            
                                
                                            
                                                |  Additional Information | 
                                            
                                            
                                                | Amp Channel | 
                                                
                                                            4 Channel
                                                 | 
                                            
                                            
                                                | Amp Freq Response at RMS Power | 
                                                
                                                            20 to 20000 Hz
                                                 | 
                                            
                                            
                                                | Amp Peak Power Output | 
                                                
                                                            400
                                                 | 
                                            
                                            
                                                | Amp RMS Power Output | 
                                                
                                                            400
                                                 | 
                                            
                                            
                                                | Amplifier Class | 
                                                
                                                            AB
                                                 | 
                                            
                                            
                                                | Bass Boost Frequency | 
                                                
                                                            45 Hz
                                                 | 
                                            
                                            
                                                | Brand | 
                                                
                                                            Rockford Fosgate
                                                 | 
                                            
                                            
                                                | Crossover | 
                                                
                                                            Active Crossover
                                                 | 
                                            
                                            
                                                | Enrock rated power | 
                                                
                                                            400
                                                 | 
                                            
                                            
                                                | Item Weight | 
                                                
                                                            10.5
                                                 | 
                                            
                                            
                                                | Manufacturer | 
                                                
                                                            Rockford Fosgate
                                                 | 
                                            
                                            
                                                | Manufacturer Part Number | 
                                                
                                                            PM400X4
                                                 | 
                                            
                                            
                                                | Marine use | 
                                                
                                                            Yes
                                                 | 
                                            
                                            
                                                | Product Dimensions (W x L x H) | 
                                                
                                                            11"L x 7.8"W x 2.4"H
                                                 | 
                                            
                                            
                                                | Size | 
                                                
                                                            11"L x 7.8"W x 2.4"H
                                                 | 
                                            
                                            
                                                | UPC | 
                                                
                                                            780687345099
                                                 | 
                                            
                                            
                                                | Warranty | 
                                                
                                                            1 Year Manufacturer Warranty
                                                 | 
                                            
                                
                         
                                                                                                        
                                
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