{"product_id":"mrdf-3","title":"MRDF-3","description":"\u003cp\u003eBuild a four-speaker boat audio system without giving up much installation space. The Rockville MRDF-3 marine amplifier delivers 100 watts RMS per channel at 2 ohms or 60 watts RMS per channel at 4 ohms. Its Class D chassis measures 8.86 inches long, 4.92 inches wide and 1.81 inches high, making it easier to plan an installation where space is limited.\u003c\/p\u003e\n\u003cp\u003eMarine-focused construction helps protect the amplifier from moisture and salt air. A conformal-coated circuit board, stainless steel hardware and an aluminum alloy heat sink support onboard use. Included white silicone terminal covers help shield the power, ground, remote and RCA connections from splashes and corrosion.\u003c\/p\u003e\n\u003cp\u003eAdjustable high-pass and low-pass filters let you shape the signal for your speakers or bridged subwoofers. Choose full-range operation or set either filter from 50Hz to 250Hz. For a two-channel bridged setup, the amplifier delivers 200 watts RMS per channel into 4-ohm loads.\u003c\/p\u003e\n\u003cp\u003eThe compact Class D design uses SMD components and is rated at 80% efficiency at 4 ohms. Tiffany-style RCA inputs connect your source, while LEDs display power, status mode and clipping. Thermal, short-circuit and over-voltage protection provide safeguards during operation.\u003c\/p\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eType: 4-channel Class D marine amplifier\u003c\/li\u003e\n\u003cli\u003eDyno-certified continuous RMS power at 2 ohms stereo: 100W x 4\u003c\/li\u003e\n\u003cli\u003eDyno-certified continuous RMS power at 4 ohms stereo: 60W x 4\u003c\/li\u003e\n\u003cli\u003eDyno-certified continuous RMS power at 4 ohms bridged: 200W x 2\u003c\/li\u003e\n\u003cli\u003eRMS power test conditions: 1kHz, 1% THD+N, 14.4 VDC at the stated load\u003c\/li\u003e\n\u003cli\u003eTotal system power: 400W RMS at 2 ohms stereo or 4 ohms bridged; 1,600W peak\u003c\/li\u003e\n\u003cli\u003eEfficiency: 80% at 4 ohms\u003c\/li\u003e\n\u003cli\u003eDistortion: less than 0.03% THD+N at 1W RMS, 20Hz–20kHz\u003c\/li\u003e\n\u003cli\u003eFrequency response: 4Hz–45kHz (±3 dB)\u003c\/li\u003e\n\u003cli\u003eSignal-to-noise ratio: 75 dBA referenced to 1W RMS into 4 ohms; 93 dBA at full power\u003c\/li\u003e\n\u003cli\u003eStereo separation: -55 dB at 5kHz\u003c\/li\u003e\n\u003cli\u003eDamping factor: 68.43\u003c\/li\u003e\n\u003cli\u003eInput sensitivity: 0.2–6.05 Vrms\u003c\/li\u003e\n\u003cli\u003eCrossover modes: full range, low pass or high pass\u003c\/li\u003e\n\u003cli\u003eAdjustable LPF\/HPF range: 50Hz–250Hz\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 9–16.1 VDC\u003c\/li\u003e\n\u003cli\u003eIdle current draw: 1A\u003c\/li\u003e\n\u003cli\u003eFuse rating: 40A, using two internal 20A fuses\u003c\/li\u003e\n\u003cli\u003ePower and ground terminals: 4 AWG\u003c\/li\u003e\n\u003cli\u003eSpeaker outputs: 10 AWG\u003c\/li\u003e\n\u003cli\u003eProtection: thermal, short circuit and over-voltage\u003c\/li\u003e\n\u003cli\u003eDimensions (L x W x H): 8.86 x 4.92 x 1.81 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eIn the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMRDF-3 amplifier\u003c\/li\u003e\n\u003cli\u003eWhite silicone terminal covers\u003c\/li\u003e\n\u003cli\u003eMounting hardware\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rockville","offers":[{"title":"Default Title","offer_id":48063872106663,"sku":"MRDF-3","price":119.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/7998\/6599\/files\/3037684.jpg?v=1792610919","url":"https:\/\/rockvilleaudio.com\/products\/mrdf-3","provider":"Rockville","version":"1.0","type":"link"}