{"product_id":"planet-audio-tr4000-1d-class-d-monoblock-amplifier-4000w-bass-power","title":"Planet Audio TR4000.1D Class D Monoblock Amplifier - 4000W Bass Power","description":"\u003cp\u003eIn this review of the Planet Audio TR4000.1D, the bottom line is simple: this monoblock is for serious bass enthusiasts who need high continuous power in a compact package. The reviewer found the amp delivers strong low-end output and flexible tuning options, making it a solid fit for powering subwoofers at 1 ohm. While some buyers report variable long-term reliability, the unit's \u003cstrong\u003eClass D efficiency\u003c\/strong\u003e and MOSFET supply make it a compelling choice for installations where space, heat management, and raw output matter most.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e4000W Peak Power:\u003c\/strong\u003e Supplies potent burst output rated at 4000W max at 1 ohm for dramatic bass impact when you need it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 Ohm Stability:\u003c\/strong\u003e Designed to run continuously into 1-ohm loads so it can properly drive demanding subwoofers without immediate overheating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass D Efficiency:\u003c\/strong\u003e Reduces power loss and heat, letting the amplifier be more compact while delivering strong output for extended listening.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMOSFET Power Supply:\u003c\/strong\u003e Provides precise voltage and current control to improve overall efficiency and reduce secondary feedback losses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Crossover and Subsonic Filter:\u003c\/strong\u003e Lets the installer fine-tune bass response and protect subwoofers from excessive low-frequency excursion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrapping Capable:\u003c\/strong\u003e Can be strapped with a second unit to double delivered power for larger subwoofer setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe TR4000.1D is best for car audio enthusiasts who plan to power one or more high-demand subwoofers and want configurable filters and a compact Class D package. Installers who need a 1-ohm stable monoblock and the option to strap amplifiers will appreciate the power headroom and routing flexibility.\u003c\/p\u003e\n\u003cp\u003eIt is not the ideal choice for casual listeners who want simple, low-power upgrades or for buyers unwilling to have the amp professionally installed and tuned. Customers concerned about absolute long-term reliability under extreme loads should consider alternatives or ensure correct electrical support and cooling.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHigh peak and continuous output for serious subwoofer performance.\u003c\/li\u003e\n\u003cli\u003eEfficient Class D design keeps size and heat down for tighter installations.\u003c\/li\u003e\n\u003cli\u003eComprehensive tuning options like variable low-pass and subsonic filters help tailor bass response.\u003c\/li\u003e\n\u003cli\u003eGood value for power according to many users when properly installed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSome users report inconsistent long-term reliability, so proper installation and power wiring are important.\u003c\/li\u003e\n\u003cli\u003eLarge fuse requirement and power demands mean a robust electrical system and professional installation are recommended.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower (Max)\u003c\/td\u003e\n\u003ctd\u003e4000W x 1 @ 1 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower @ 2 Ohm\u003c\/td\u003e\n\u003ctd\u003e2000W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower @ 4 Ohm\u003c\/td\u003e\n\u003ctd\u003e1000W x 1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStrapped Power\u003c\/td\u003e\n\u003ctd\u003e8000W x 1 @ 2 Ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Response\u003c\/td\u003e\n\u003ctd\u003e20 Hz to 250 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS\/N Ratio\u003c\/td\u003e\n\u003ctd\u003e105 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e15.3 x 9.75 x 2.13 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe Planet Audio TR4000.1D is a high-output, efficiently designed monoblock that delivers strong bass when installed and tuned correctly; it represents good value for serious car audio builds that require 1-ohm stability and configurable crossover control. Buyers who want maximum, reliable performance should ensure professional installation and proper power wiring to get the most from this amp.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eIs this amplifier safe to run at 1 ohm continuously?\u003c\/strong\u003e\u003cbr\u003eYes, the TR4000.1D is rated 1 ohm stable and designed to run into 1-ohm subwoofer loads, but correct wiring and cooling are important for long-term reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan two of these amplifiers be combined for more power?\u003c\/strong\u003e\u003cbr\u003eYes, the unit is strap-capable so two amplifiers can be strapped to increase total power output for larger subwoofer systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes it include protection features?\u003c\/strong\u003e\u003cbr\u003eIt uses a MOSFET power supply and Class D design to reduce heat and power loss; installers should still use appropriate fusing and a professional install to protect the system.\u003c\/p\u003e","brand":"Planet Audio","offers":[{"title":"Default Title","offer_id":48235575345371,"sku":"B01N39IKNK","price":134.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/91sQiWtRTAL._AC_SL1500.jpg?v=1770788099","url":"https:\/\/gearmusthave.com\/products\/planet-audio-tr4000-1d-class-d-monoblock-amplifier-4000w-bass-power","provider":"GearMustHave","version":"1.0","type":"link"}