{"product_id":"diamond-audio-micro81u-500w-rms-full-range-class-d-monoblock-digital-amplifier","title":"Diamond Audio MICRO81U 1-Channel MICRO8U Series Monoblock Class D Digital Car Amplifier","description":"\u003ch3\u003eDiamond Audio MICRO81U\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eDiamond Audio MICRO8U 1-Channel Monoblock Class D Amplifier\u003c\/strong\u003e, designed for enthusiasts who demand compact size, high output, and all-weather durability. As part of the advanced Diamond Audio MICRO8U amplifier series, this monoblock car audio amplifier delivers exceptional performance for subwoofers in car, marine, motorcycle, and powersports audio systems.\u003c\/p\u003e\n\u003cp\u003eEngineered from the ground up, the Diamond Audio MICRO8U monoblock amplifier features a full-range Class D design, providing clean, efficient power while minimizing heat and maximizing performance. With 300W RMS at 2 ohms and 175W RMS at 4 ohms, this 1-channel amplifier is ideal for driving subwoofers with tight, controlled bass and consistent output, even in demanding environments.\u003c\/p\u003e\n\u003cp\u003eBuilt for versatility, the MICRO8U Class D amplifier is conformal-coated for all-weather applications, making it perfect for marine audio systems, motorcycles, ATVs, UTVs, and outdoor installations. The protective coating helps guard against moisture, dust, and environmental exposure, ensuring long-lasting reliability wherever your system is installed.\u003c\/p\u003e\n\u003cp\u003eThe compact amplifier design allows for easy installation in tight spaces, while the uniform MICRO8U platform ensures a clean and streamlined look across your entire audio setup. With selectable REM, VOX, and DC turn-on modes, along with flexible input configurations, this monoblock amplifier integrates seamlessly into both factory and aftermarket systems.\u003c\/p\u003e\n\u003cp\u003eAdvanced tuning features include a 40–400Hz crossover filter, wide frequency response (10Hz–350Hz), and adjustable input sensitivity (0.2–10V), allowing precise control over your subwoofer performance.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1-Channel Monoblock Class D Amplifier\u003c\/li\u003e\n\u003cli\u003e300W x 1 @ 2Ω \/ 175W x 1 @ 4Ω RMS\u003c\/li\u003e\n\u003cli\u003eCompact, Space-Saving Design\u003c\/li\u003e\n\u003cli\u003eConformal-Coated for All-Weather Durability\u003c\/li\u003e\n\u003cli\u003eSelectable REM \/ VOX \/ DC Turn-on Modes\u003c\/li\u003e\n\u003cli\u003eAdjustable Crossover and Input Sensitivity\u003c\/li\u003e\n\u003cli\u003eIncludes RCA Input \u0026amp; Speaker Output Harness Kits\u003c\/li\u003e\n\u003cli\u003eFull Range Class D IR Chipset\u003c\/li\u003e\n\u003cli\u003eDirectFET Power MOSFET Output Stage\u003c\/li\u003e\n\u003cli\u003eSMD Technology on 4 layer Glass PC Board\u003c\/li\u003e\n\u003cli\u003eICAD Circuit Provides Superior Overload Protection\u003c\/li\u003e\n\u003cli\u003eFrequency Response : 10 Hz – 350Hz\u003c\/li\u003e\n\u003cli\u003eVariable 12dB Crossovers\u003c\/li\u003e\n\u003cli\u003eMicro Bass Boost +12dB @45HZ\u003c\/li\u003e\n\u003cli\u003ePremium 8 Gauge Power Connections\u003c\/li\u003e\n\u003cli\u003eIdeal for Subwoofer and Bass Applications\u003c\/li\u003e\n\u003cli\u003eIncludes Remote Bass Knob\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ch4\u003eMICRO8U Series 1-Channel Monoblock Class D Car Amplifier\u003c\/h4\u003e\n\u003ch4\u003ePower Rating\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMAX Power : 500 Watt\u003c\/li\u003e\n\u003cli\u003eRMS Power (2Ω) : 300 Watt x 1 Channel\u003c\/li\u003e\n\u003cli\u003eRMS Power (4Ω) : 175 Watt x 1 Channel\u003c\/li\u003e\n\u003cli\u003eBridged (Mono 2Ω) : 300 Watt x 1 Channel\u003c\/li\u003e\n\u003cli\u003eBridged (Mono 4Ω) : 175 Watt x 1 Channel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003ePower Supply\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003ePower Supply : Full PWM\u003c\/li\u003e\n\u003cli\u003ePower Supply Threshold : 10.0VDC - 17.0VDC\u003c\/li\u003e\n\u003cli\u003eIdle Current : 0.7A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDistortion\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eTHD 4 (1KHz @ 4Ω) : 0.5%\u003c\/li\u003e\n\u003cli\u003eS\/N Ratio (A Weighted @1W) : -85dBA\u003c\/li\u003e\n\u003cli\u003eS\/N Ratio (A Weighted @ FP) : -101.1dBA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInput Sensitivity\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLow Input Level : 200mV - 10V\u003c\/li\u003e\n\u003cli\u003eHigh Input Level : N\/A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eInput Impedance\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eLow Input Level : 20KΩ\u003c\/li\u003e\n\u003cli\u003eAUX Input Level : 20KΩ\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eOutput Stage\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eOutput Impedance : 0.011 Ω\u003c\/li\u003e\n\u003cli\u003eDamping Factor (50Hz @ 4Ω) : \u0026gt;250\u003c\/li\u003e\n\u003cli\u003eBandwidth (-3dB) : 10Hz-350Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCrossover (-12dB\/Oct)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eVariable High-Pass : 40Hz - 400Hz\u003c\/li\u003e\n\u003cli\u003eVariable Low-Pass : 40Hz - 400Hz\u003c\/li\u003e\n\u003cli\u003eVariable Sub-Sonic : 10Hz - 55Hz\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eFuse Ratings\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eATC : 25A\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eDimensions\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eL x W x H : 9.0\" x 4.06\" x 1.52\" (228.6 x 103.124 x 38.608)mm\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Diamond Audio","offers":[{"title":"Default Title","offer_id":47260463890620,"sku":"MICRO81U","price":499.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0790\/0741\/6508\/files\/MICRO81U_01.jpg?v=1786442893","url":"https:\/\/11thstreetelectronic.com\/products\/diamond-audio-micro81u-500w-rms-full-range-class-d-monoblock-digital-amplifier","provider":"11TH STREET ELECTRONIC INC","version":"1.0","type":"link"}