<p>DBM50 Product Video:<p> <center><div class="videoframe"> <video controls="controls" preload="none" src="https://player.vimeo.com/external/640472338.hd.mp4?s=6c2f6d13931b75e61684d247967a8f0a8c74bd72&amp;profile_id=175" poster="https://smhttp-ssl-33159.nexcesscdn.net/Assets/thumbnails/DBM50_Product.jpg" onclick="this.play();" width="640" height="360"></video> </div></center><p> What's in the Box:<p> Amplifier<br> PA Microphone<br> Bass Remote<br> Birth sheet with tested power<br> Owner’s manual<br> Mounting Screws<br> Warranty<p> Description:<p> The all new dBM marine series of amplifiers gives you the best of both worlds! We took the sound of our best-selling series of dB car amps and we added top of the line marine grade parts so that they will last even under the harshest conditions on the water.<p> We went a little overboard (no pun intended) to make this amp marine ready. We conformal coated the PCB board with a waterproof glue that is painted on to protect the circuitry. We then added waterproof silicone covers over the terminals so that water can never get into the amp. The heat sink, including the bottom plate, is made of aluminum which is rustproof. The end panels, internal mounting screws and hardware of the amp are made of stainless steel and are rustproof. Even after many years of use the amp will be rust free and operate like new!<p> The DBM50 is a 5 channel high power amplifier with 4,000 watts peak output and 980 watts Dyno Certified RMS power. Here at Rockville we offer the best value in marine audio. We therefore want to make it easy for you to compare our products to any other brand. The peak rating can be used to compare with brands who use peak ratings such as Boss and Power Acoustik while the Dyno Certified RMS rating can be used to compare with top brands such as Kicker, Rockford, Alpine, etc.<p> This is a 5 channel amplifier that will power your entire marine system. The amplifier has 4 channels with full range signal, and a 5th mono channel dedicated to your subwoofers. Our crossover supports low pass, high pass, bandpass, and subsonic. This makes our amp ideal for subwoofers (sealed and vented).<p> Features:<p> Rockville DBM50 4000w Peak/980w Dyno-Certified RMS 5 Channel Marine/Boat Amplifier Amp+Mic<br> Dyno Certified RMS Power Ratings: (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker, Rockford Fosgate, etc)<br> 2 Ohm: 120 Watts x 4 + 500 Watts x 1 &lt;1% THD+N<br> 4 Ohm: 80 Watts x 4 + 300 Watts x 1 &lt;1% THD+N<br> Peak: (Use these ratings when comparing with the top budget brands such as Boss, Power Acoustik, etc)<br> 2 Ohm 480 Watts x 4 + 2000 Watts x 1<br> 4 Ohm: 320 Watts x 4 + 1200 Watts x 1<br> Channels 1-4 are Class “AB” and Channel 5 is class “D”<br> Fully Adjustable 12dB / Octave Crossover with Differential Circuitry<br> Low Pass Filter: (CH3-CH4)40Hz –4KHz /(CH5)50Hz –250Hz<br> High Pass Filter: 15Hz – 4KHz<br> Subsonic Filter: 15Hz - 50Hz<br> Remote Dashboard Subwoofer Control<br> Includes PA microphone<br> Painted Conformal Coating PCB Board is protected from moisture (Uses 2577 Waterproof Glue)<br> Waterproof silicone covers for end panels<br> Rustproof Aluminum heat sink<br> Stainless steel end panels are rustproof<br> All screws and mounting hardware are stainless steel and rustproof<br> Bottom panel is aluminum and rustproof<br> High-Speed MOSFET Power Supply<br> Rugged switching MOSFETs for Class D in CH5<br> Under Voltage Protection at 10V<br> Over Voltage Protection at 16V<br> Full IC-Controlled Protection Circ