![Audio Visual World - Rockford Fosgate P400X1 400W RMS Punch Series Full-range Monoblock Class AB Amplifier Audio Visual World - Rockford Fosgate P400X1 400W RMS Punch Series Full-range Monoblock Class AB Amplifier](https://audiovisualworld.co.uk/pub/media/catalog/product/cache/b70ee3b163c559ed3d7a8a1ca959a3b8/p/4/p400x1-2.jpg)
Audio Visual World - Rockford Fosgate P400X1 400W RMS Punch Series Full-range Monoblock Class AB Amplifier
![Rockford Fosgate amps are REALLY underrated. So I decided to take out the pdx f6 and see what the punch 400x4 could do and wow... from my testing at 14.8 volts this Rockford Fosgate amps are REALLY underrated. So I decided to take out the pdx f6 and see what the punch 400x4 could do and wow... from my testing at 14.8 volts this](https://i.redd.it/0quto7wdewq21.jpg)
Rockford Fosgate amps are REALLY underrated. So I decided to take out the pdx f6 and see what the punch 400x4 could do and wow... from my testing at 14.8 volts this
![Best Buy: Rockford Fosgate Punch 600W Bridgeable 2-Channel MOSFET Amplifier with Selectable Crossover 201S Best Buy: Rockford Fosgate Punch 600W Bridgeable 2-Channel MOSFET Amplifier with Selectable Crossover 201S](https://pisces.bbystatic.com/image2/BestBuy_US/images/products/5221/5221878_ra.jpg)