{"product_id":"mb-quart-discus-5-channel-amp-500w-waterproof-marine-amplifier","title":"MB Quart Discus 5 Channel Amp, 500W Waterproof Marine Amplifier","description":"\u003cp\u003e\u003cstrong\u003eThe MB Quart Discus DA2-500.5D is a compact waterproof 500 watt 5-channel amplifier with top mounted controls, potted internals and waterproof connectors.\u003c\/strong\u003e It is IP67 rated and listed by MB Quart for marine, mobile and powersports use.\u003c\/p\u003e\u003cp\u003eA 5 channel amp lets one chassis run a whole system. As a 5 channel marine amp, UTV amplifier, UTV amp or boat amplifier, it can stand in for two separate amplifiers, and its IP67 rating makes it a true waterproof amplifier. In MB Quart's lineup it is the MB Quart Discus amplifier for full systems, and the most complete MB Quart amp in the Discus range. For a marine amplifier that is also an MB Quart amplifier built for powersports, start here.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e500 watt max Class D, 5-channel\u003c\/li\u003e\n\u003cli\u003e4 x 50 + 1 x 225 watts at 2 ohms\u003c\/li\u003e\n\u003cli\u003e4 x 35 + 1 x 150 watts at 4 ohms\u003c\/li\u003e\n\u003cli\u003e1 x 350 watts at 1 ohm (CH5 only)\u003c\/li\u003e\n\u003cli\u003e2 x 100 watts bridged at 4 ohms (CH1-4)\u003c\/li\u003e\n\u003cli\u003eIP67 waterproof and dustproof\u003c\/li\u003e\n\u003cli\u003eTop mounted controls under a sealed cover: crossover, bass boost and input sensitivity\u003c\/li\u003e\n\u003cli\u003eQ-Stasis preamplifier stage and MB Quart FLUID-FET output devices\u003c\/li\u003e\n\u003cli\u003eWaterproof input and output connectors\u003c\/li\u003e\n\u003cli\u003eOverload and speaker short protection with indicators on the top panel\u003c\/li\u003e\n\u003cli\u003eWired bass remote included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt To Solve: Amplifier Failures in Wet, Dusty Machines and Boats\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAmplifiers that corrode or short when water and dust get inside\u003c\/li\u003e\n\u003cli\u003eControls that are hard to reach once the amp is mounted\u003c\/li\u003e\n\u003cli\u003eWeak speaker or subwoofer output in a loud open-air vehicle\u003c\/li\u003e\n\u003cli\u003eMessy wiring that is hard to seal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eBest For: UTV, Boat and Truck Builds Needing a 5-Channel Waterproof Amp\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUTV and side-by-side owners building a waterproof audio system\u003c\/li\u003e\n\u003cli\u003eBoat and marine installs\u003c\/li\u003e\n\u003cli\u003eMobile builds where moisture is a risk\u003c\/li\u003e\n\u003cli\u003eOne-amp systems running four speakers and a subwoofer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eChannels: 5-channel\u003c\/li\u003e\n\u003cli\u003ePower: 4 x 50 + 1 x 225 watts at 2 ohms\u003c\/li\u003e\n\u003cli\u003ePower: 4 x 35 + 1 x 150 watts at 4 ohms\u003c\/li\u003e\n\u003cli\u003ePower: 1 x 350 watts at 1 ohm (CH5 only)\u003c\/li\u003e\n\u003cli\u003ePower: 2 x 100 watts bridged at 4 ohms (CH1-4)\u003c\/li\u003e\n\u003cli\u003eCrossover: CH1-4 switched full \/ high pass; CH5 low pass 50Hz-150Hz, subsonic 15Hz-50Hz, bass boost 0 or 12dB\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.2V-9V\u003c\/li\u003e\n\u003cli\u003ePower terminal: 4 AWG; speaker wire: 12 AWG\u003c\/li\u003e\n\u003cli\u003eFusing: 40A external\u003c\/li\u003e\n\u003cli\u003eIP rating: IP67\u003c\/li\u003e\n\u003cli\u003eAmp dimensions: 10.625 x 3.875 x 1.875 in; amp weight 5.1 lbs\u003c\/li\u003e\n\u003cli\u003eColor: Black; warranty: 1 year\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: DA2-500.5D\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eMB Quart lists this product as universal: it is not specific to one machine. Fitment is not guaranteed for every mounting location; confirm space, mounting and wiring for your UTV, boat or RV before ordering.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eIs the MB Quart DA2-500.5D waterproof?\u003c\/h3\u003e\n\u003cp\u003eYes. MB Quart states it meets or exceeds IP67 standards for waterproof and dustproof, with waterproof connectors and a sealed top cover over the controls.\u003c\/p\u003e\n\u003ch3\u003eHow much power does the DA2-500.5D make?\u003c\/h3\u003e\n\u003cp\u003eMB Quart rates it at 500 watts max: 4 x 50 + 1 x 225 watts at 2 ohms; 4 x 35 + 1 x 150 watts at 4 ohms; 1 x 350 watts at 1 ohm (CH5 only); 2 x 100 watts bridged at 4 ohms (CH1-4).\u003c\/p\u003e\n\u003ch3\u003eWhere are the controls?\u003c\/h3\u003e\n\u003cp\u003eOn top of the amplifier, behind a sealed cover: on-board crossover, bass boost and adjustable input sensitivity.\u003c\/p\u003e\n\u003ch3\u003eWhat wire size does it use?\u003c\/h3\u003e\n\u003cp\u003eMB Quart lists 4 AWG power and ground, 12 AWG speaker wire and 40A external fusing. MB Quart publishes a Discus DA2 quick start guide.\u003c\/p\u003e\n\u003ch3\u003eDoes it include a bass remote?\u003c\/h3\u003e\n\u003cp\u003eYes. MB Quart includes a wired bass remote for adjusting bass from anywhere in the vehicle.\u003c\/p\u003e\n\u003ch3\u003eCan it run speakers and a subwoofer?\u003c\/h3\u003e\n\u003cp\u003eYes. MB Quart lists 2, 4 or 5 channel operation, with channel 5 dedicated to a subwoofer.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhy MB Quart\u003c\/h2\u003e\n\u003cp\u003eMB Quart's Nautic and Discus lines are built for open-air use on boats, UTVs and RVs, where sun, spray, dust and vibration are part of every trip. MB Quart backs this product with a 1 year warranty.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuild a Waterproof System Around the Discus 5-Channel Amplifier\u003c\/h2\u003e\n\u003cp\u003ePlan speaker impedance, power wire and fusing for the DA2-500.5D using MB Quart's ratings before you mount it. Dunes 2 Dezert SXS carries MB Quart Nautic speakers, tower speakers and other Discus amplifiers to complete a UTV or boat system.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is the MB Quart DA2-500.5D waterproof?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. MB Quart states it meets or exceeds IP67 standards for waterproof and dustproof, with waterproof connectors and a sealed top cover over the controls.\"}}, {\"@type\": \"Question\", \"name\": \"How much power does the DA2-500.5D make?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"MB Quart rates it at 500 watts max: 4 x 50 + 1 x 225 watts at 2 ohms; 4 x 35 + 1 x 150 watts at 4 ohms; 1 x 350 watts at 1 ohm (CH5 only); 2 x 100 watts bridged at 4 ohms (CH1-4).\"}}, {\"@type\": \"Question\", \"name\": \"Where are the controls?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"On top of the amplifier, behind a sealed cover: on-board crossover, bass boost and adjustable input sensitivity.\"}}, {\"@type\": \"Question\", \"name\": \"What wire size does it use?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"MB Quart lists 4 AWG power and ground, 12 AWG speaker wire and 40A external fusing. 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