{"product_id":"rel-acoustics-s-550-10-inch-powered-subwoofer-piano-black","title":"REL Acoustics S\/550 10 Inch Powered Subwoofer - Piano Black","description":"\u003ch3 data-start=\"30\" data-end=\"124\"\u003e\u003cstrong data-start=\"30\" data-end=\"75\"\u003eEditor’s Choice 2025 – The Absolute Sound\u003c\/strong\u003e\u003c\/h3\u003e\n\u003chr\u003e\n\u003ch3 data-start=\"30\" data-end=\"124\"\u003e\n\u003cbr data-start=\"75\" data-end=\"78\"\u003e\u003cstrong data-start=\"78\" data-end=\"122\"\u003eRecommended Component 2025 – Stereophile\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003chr\u003e\n\u003ch3 data-start=\"126\" data-end=\"171\"\u003e\u003cstrong data-start=\"130\" data-end=\"171\"\u003eA Flagship Sub, Refined to Perfection\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3 data-start=\"173\" data-end=\"223\"\u003e\u003cstrong data-start=\"177\" data-end=\"223\"\u003eDeeper Bass. Sharper Detail. Bigger Stage.\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"225\" data-end=\"455\"\u003eThe REL Acoustics S\/550 elevates low-frequency reproduction to a new level of speed, nuance, and control. Designed for discerning two-channel and home theater enthusiasts, it’s the subwoofer that disappears—until it roars to life.\u003c\/p\u003e\n\u003ch3 data-start=\"457\" data-end=\"499\"\u003e\u003cstrong data-start=\"461\" data-end=\"499\"\u003eBuilt for Systems That Demand More\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"501\" data-end=\"939\"\u003eREL’s S\/550 is the ideal choice for full-range loudspeakers and reference systems that need effortless low-end support without sacrificing agility or tone. With a 550-watt Class A\/B amplifier and a 12” carbon-fiber active driver paired with a matching 12” passive radiator, the S\/550 delivers low-end weight and high-frequency coherence that enhance—not overwhelm—your music and movies. Just add speakers, and feel your system come alive.\u003c\/p\u003e\n\u003ch3 data-start=\"941\" data-end=\"970\"\u003e\u003cstrong data-start=\"945\" data-end=\"970\"\u003ePower Meets Precision\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"972\" data-end=\"1405\"\u003eBass isn’t just about boom. It’s about control, speed, and subtlety—and that’s where the S\/550 shines. The custom-designed 12\" ContinuousCast™ carbon fiber driver digs down to a subterranean 19Hz, yet retains startling transient snap and low coloration. The passive down-firing radiator expands low-frequency impact without port noise or bloat. The result? Deep bass that breathes, supports, and extends your system’s dimensionality.\u003c\/p\u003e\n\u003cp data-start=\"1407\" data-end=\"1668\"\u003eRated at 550 watts RMS, the NextGen5™ Class A\/B amplifier gives the S\/550 the kind of power reserve typically found in high-end power amps. Whether tracking a cello’s low register or the thunder of an action scene, it stays composed, tight, and perfectly timed.\u003c\/p\u003e\n\u003ch3 data-start=\"1670\" data-end=\"1701\"\u003e\u003cstrong data-start=\"1674\" data-end=\"1701\"\u003eExpert Reviews \u0026amp; Quotes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1703\" data-end=\"1838\"\u003e\u003cem data-start=\"1703\" data-end=\"1802\"\u003e\"The S\/550 integrates so seamlessly, you forget it’s there—until it does something jaw-dropping.\"\u003c\/em\u003e\u003cbr data-start=\"1802\" data-end=\"1805\"\u003e– \u003cstrong data-start=\"1807\" data-end=\"1838\"\u003eHi-Fi+ Magazine, March 2025\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1840\" data-end=\"1960\"\u003e\u003cem data-start=\"1840\" data-end=\"1928\"\u003e\"REL continues to define what a subwoofer should sound like—clean, fast, and musical.\"\u003c\/em\u003e\u003cbr data-start=\"1928\" data-end=\"1931\"\u003e– \u003cstrong data-start=\"1933\" data-end=\"1960\"\u003eStereophile, April 2025\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3 data-start=\"1962\" data-end=\"1997\"\u003e\u003cstrong data-start=\"1966\" data-end=\"1997\"\u003eEngineered for Sonic Purity\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"1999\" data-end=\"2471\"\u003eAt the heart of the S\/550 is REL’s signature carbon fiber 12” driver—stiff, lightweight, and built for ultra-fast transients. It’s matched with a high-inertia passive radiator that extends depth without distortion. The cabinet is braced and finished to luxury standards, minimizing resonance while complementing any living space. REL’s high-level Neutrik Speakon connection ensures the sub receives the same signal as your main speakers—resulting in unmatched integration.\u003c\/p\u003e\n\u003ch3 data-start=\"2473\" data-end=\"2508\"\u003e\u003cstrong data-start=\"2477\" data-end=\"2508\"\u003eInputs That Fit Your System\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2510\" data-end=\"2942\"\u003eWhether you’re running a high-end stereo rig or a multi-channel AV setup, the S\/550 is ready. It features REL’s High-Level Speakon input, a stereo RCA input for line-level use, and a dedicated LFE RCA input for home theater. Dual filter sets support simultaneous music and movie integration—no re-cabling required. Optional wireless with REL’s \u003cem data-start=\"2854\" data-end=\"2866\"\u003eAirShip II\u003c\/em\u003e module keeps your room clutter-free without compromising speed or fidelity.\u003c\/p\u003e\n\u003ch3 data-start=\"2944\" data-end=\"2997\"\u003e\u003cstrong data-start=\"2948\" data-end=\"2997\"\u003eTailored for Audiophiles and Cinephiles Alike\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"2999\" data-end=\"3363\"\u003ePerfect for large listening rooms, premium stereo systems, or immersive Dolby Atmos setups, the S\/550 adds authority without drawing attention to itself. Its stackable design allows for REL’s Line Array configuration—ideal for ultra-high-end systems seeking full-range performance. Pair one or more units for scalable bass that fills the space, not the soundstage.\u003c\/p\u003e\n\u003ch3 data-start=\"3365\" data-end=\"3413\"\u003e\u003cstrong data-start=\"3369\" data-end=\"3413\"\u003eA Reference Subwoofer for the Real World\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"3415\" data-end=\"3567\"\u003eIf your system deserves bass that’s felt and not just heard, the REL S\/550 delivers. Deep, fast, and musically aware—it’s bass you’ll fall in love with.\u003c\/p\u003e","brand":"REL Acoustics","offers":[{"title":"New","offer_id":45980008808621,"sku":"NEW-RLS550-PIABLK","price":3299.0,"currency_code":"USD","in_stock":true},{"title":"Demo","offer_id":45980008841389,"sku":"DEMO-RLS550-PIABLK","price":3299.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/3708\/1773\/files\/RLS550-PIABLK_02_angle_2025__99473.1759776699.1280.1280_d97d410f-11b9-46db-8b40-ae18ff6fc8c1.jpg?v=1778164715","url":"https:\/\/www.audioadvisor.com\/products\/rel-acoustics-s-550-10-inch-powered-subwoofer-piano-black","provider":"Audio Advisor","version":"1.0","type":"link"}