<p> <strong> Videos of RXM-S20: </strong> </p> <center> <div> <video src="https://player.vimeo.com/external/206588125.hd.mp4?s=9ddbe0f1a73dcb67e291bb5f1a6d86e9ac526aee&amp;profile_id=174" poster="https://www.audiosavings.com/Assets/thumbnails/rxm-s20.jpg" preload="none" controls="controls" width="640" height="360"> </video> </div> </center> <center> <div> <video src="https://player.vimeo.com/external/208663727.hd.mp4?s=607156520fba0af90365ca43879ff8a9daa1bad9&amp;profile_id=119" poster="https://www.audiosavings.com/Assets/thumbnails/RXM-S20-Unboxing.jpg" preload="none" controls="controls" width="640" height="360"> </video> </div> </center> <p> <strong> <br /> </strong> </p> <p> <strong> Includes: </strong> </p> <ul> <li> Amplifier </li> <li> PA Microphone </li> <li> Mounting Hardware </li> <li> Owners Manual </li> </ul> <p> <strong> Features: </strong> </p> <ul> <li> Rockville RXM-S20 Proton Series 1600w Peak/400w Dyno-Certified RMS 4 Channel Micro Marine/ATV Amplifier with PA Microphone Included! </li> <li> PA Microphone with talkover - When you talk on the mic it will must the music and when you stop talking the music will come back on </li> <li> <strong> Dyno Certified RMS Power Ratings: </strong> (Certified Dyno Test / Less than 1 % THD) (Use these ratings when comparing with top brands such as Kicker, Rockford Fosgate, etc) </li> <li> 300 Watts (4 x 75 Watts) at 4 ohms and 1% THD+N </li> <li> 400 Watts (4 x 100 Watts) at 2 ohms &lt; 1% THD </li> <li> 400 Watts (2 x 200 Watts) bridged @ 4 Ohms &lt; 1% THD </li> <li> <strong> Peak: </strong> (Use these ratings when comparing with the top budget brands such as Boss, Power Acoustik, etc) </li> <li> Marine amplifier with conformal coated PCB board </li> <li> High-Speed MOSFET Power Supply </li> <li> Studio-Grade Bipolar Output Stage Transistors </li> <li> Double Sided Surface Mount (SMD) PCB Design&nbsp; </li> <li> Selectable +6dB/+12dB Bass Equalizer @ 45hz </li> <li> <strong> Channel Separation: </strong> 50 dB </li> <li> <strong> Current drawn @ MAX RMS output: </strong> 27A @ 4ohm, 40A @ 2ohm </li> <li> <strong> Efficiency @ MAX RMS output: </strong> 70% @ 4ohm, 63% @ 2ohm </li> <li> 2-Ohm Stable Stereo </li> <li> 4-Ohm Mono Bridgeable </li> <li> 3 Channel Mixed-Mono Capable </li> <li> <strong> Input sensitivity: </strong> 200mV-6V </li> <li> Mute and Delay Soft Start System </li> <li> Full IC-Controlled Protection Circuitry </li> <li> 2 CH / 4 CH Input Mode Switch </li> <li> RCA Preamp Line Output </li> <li> 8 Volt Preamp Circuitry </li> <li> Status Mode LED Indicator </li> <li> 4 Gauge Lucite Encapsulated Power/Ground Terminals </li> <li> 12 Gauge Lucite Encapsulated Speaker Terminals </li> <li> <strong> THD+A: </strong> 0.01% </li> <li> <strong> Frequency Response: </strong> 15Hz - 20KHz </li&g