{"product_id":"mb-quart-discus-waterproof-amplifier-520w-4-channel","title":"MB Quart Discus Waterproof Amplifier, 520W 4 Channel","description":"\u003cp\u003e\u003cstrong\u003eThe MB Quart Discus DA2-520.4D is a compact waterproof 520 watt 4-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\u003eThis waterproof amplifier is the four channel Discus. As a 4 channel marine amp, it drives four speakers on a boat or in a UTV, and it serves as a boat amplifier, marine amplifier, UTV amplifier or UTV amp in tight spaces. In MB Quart's lineup it is the four channel MB Quart Discus amplifier, a higher power step up from the Nautic MB Quart amp range and an MB Quart amplifier for full speaker systems.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e520 watt max Class D, 4-channel\u003c\/li\u003e\n\u003cli\u003e4 x 130 watts at 2 ohms\u003c\/li\u003e\n\u003cli\u003e4 x 90 watts at 4 ohms\u003c\/li\u003e\n\u003cli\u003e2 x 260 watts bridged at 4 ohms\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\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 4-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\u003eFour speaker systems, or two bridged channels\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eChannels: 4-channel\u003c\/li\u003e\n\u003cli\u003ePower: 4 x 130 watts at 2 ohms\u003c\/li\u003e\n\u003cli\u003ePower: 4 x 90 watts at 4 ohms\u003c\/li\u003e\n\u003cli\u003ePower: 2 x 260 watts bridged at 4 ohms\u003c\/li\u003e\n\u003cli\u003eCrossover: Switched OFF \/ HPF \/ LPF; high pass 15Hz-300Hz, low pass 50Hz-300Hz\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: 90A 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 5.05 lbs\u003c\/li\u003e\n\u003cli\u003eColor: Black; warranty: 1 year\u003c\/li\u003e\n\u003cli\u003eManufacturer Part Number: DA2-520.4D\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 DA2-520.4D 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 DA2-520.4D make?\u003c\/h3\u003e\n\u003cp\u003eMB Quart rates it at 520 watts max: 4 x 130 watts at 2 ohms; 4 x 90 watts at 4 ohms; 2 x 260 watts bridged at 4 ohms.\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 90A external fusing. MB Quart publishes a Discus DA2 quick start guide.\u003c\/p\u003e\n\u003ch3\u003eCan it be bridged?\u003c\/h3\u003e\n\u003cp\u003eYes. MB Quart lists 2 x 260 watts bridged at 4 ohms.\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 4-Channel Amplifier\u003c\/h2\u003e\n\u003cp\u003ePlan speaker impedance, power wire and fusing for the DA2-520.4D 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 DA2-520.4D 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 DA2-520.4D make?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"MB Quart rates it at 520 watts max: 4 x 130 watts at 2 ohms; 4 x 90 watts at 4 ohms; 2 x 260 watts bridged at 4 ohms.\"}}, {\"@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 90A external fusing. MB Quart publishes a Discus DA2 quick start guide.\"}}, {\"@type\": \"Question\", \"name\": \"Can it be bridged?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. MB Quart lists 2 x 260 watts bridged at 4 ohms.\"}}]}\u003c\/script\u003e","brand":"MB Quart","offers":[{"title":"Default Title","offer_id":68072411922468,"sku":"DA2-520.4D","price":415.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0694\/6488\/3236\/files\/MBQuart_Discus_DA2-520.4D_01.jpg?v=1794280957","url":"https:\/\/dunes2dezertsxs.com\/products\/mb-quart-discus-waterproof-amplifier-520w-4-channel","provider":"Dunes 2 Dezert SXS","version":"1.0","type":"link"}