snippet: 560Watt Nautic Amplifier MAXXNA35604 By Petra MB Quart NA3-560.4 Nautic Series Marine Class SQ Amplifier (560 Watts Max, 4 Channels) SKU: MAXXNA35604 Vendor SKU: NA3-560.4 Manufacturer: Petra Brand Name: Mb Quart(R) Category: Automotive & Marine Sub-Category 1: Marine Electronics Sub-Category 2: Marine Audio Sub-Category 3: Marine Amps UPC Code: 806576230014 Warranty: 1-Year Country Of Origin: China Product Dimension: 20.4 W x 7.1 D x 3 H Inches, Weight: 6. (Page 1)