{"product_id":"synergistic-research-foundation-xl-speaker-cable","title":"Synergistic Research Foundation XL Speaker Cable","description":"\u003ch2 class=\"n6owBd awi2gc\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003eThe \u003cspan class=\"rQesXe MPyX\"\u003eSynergistic Research Foundation XL Speaker Cable\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e is a premium, high-performance loudspeaker cable designed as an advanced evolution of the Foundation SX series. Engineered to close the performance gap with the ultra-high-end flagship series, the Foundation XL \u003cspan class=\"rQesXe MPyX\"\u003edoubles the count of 99.9999% pure silver Air Strings\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e to achieve unmatched immediacy, transient response, and musical resolution without listener fatigue. The cable is constructed utilizing an unconventional four-piece architecture (separating positive and negative runs into individual, lightweight lines) and is treated with trickle-down \u003cspan class=\"rQesXe MPyX\"\u003eSRX XL Matrix Shielding\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e and a \u003cspan class=\"rQesXe MPyX\"\u003e1,000,000-volt high-voltage conditioning process\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e. Complete with customizable \u003cspan class=\"rQesXe MPyX\"\u003eCarbon Fiber UEF Tuning Discs\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e, it functions as an elite-tier system backbone that dramatically scales up soundstage depth, natural timbre, and low-frequency authority.\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp class=\"n6owBd awi2gc\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eOur new Foundation Interconnects and Speaker Cables are the brainchildren of our Lead Designer who wanted an affordable IC and SC loom with the performance for which other companies charge thousands of dollars. To make this a reality, Ted distilled his highest performance cable technologies like pure six nines silver in a handmade Air String geometry with UEF Matrix Shielding taken directly from our Atmosphere X Series cables and a full Blue Fuse treatment to make these cables punch far above their weight class. When paired with our UEF Blue or Black AC Power Cords, you have an affordable loom with sonic performance enough for even six-figure stereo systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"n6owBd awi2gc\"\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eIf you are like many audiophiles, perhaps you’ve never experienced a full loom of cables designed to work together because you felt they would be too expensive? Or perhaps you think your current cable mix match is synergistic in your system? If so, now is the time to audition a full loom of Foundation cables with UEF Blue or Black power cords from Synergistic Research, and you’ll discover just what your system is truly capable of. We are so confident these are the best sounding cables in the world at their price points, we’re offering them through participating SR dealers and distributors with a full 30-day money back guarantee. With Foundation cables, you can take your time and discover what the Synergistic Research house sound is all about. Foundation Series cables also blend perfectly with all current SR Series cables including Atmosphere X and Galileo SX so you can mix and match while staying true to the SR house sound of detail, air, soundstaging and dynamics with an ultra-low noise floor. Foundation cables are also a solid foundation when employing other SR products that create synergy in acoustics, AC and Ground Filtration, and Component Isolation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eUEF Matrix Shield with Graphene: Matrix shielding\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eAtmosphere X began when we started exploring ways to improve our UEF Shielding by applying UEF Technology first developed for our BLUE Fuses to Atmosphere Series cables. By placing UEF Tech in a grid pattern on the shields of Atmosphere cables we were able to dramatically lower the noise floor with a surprising increase in musicality or the subjective enjoyment of music. We then began a painstaking double-blind 6-month trial where we would listen to seemingly identical cables marked with random alphanumeric codes to conceal differing patterns of UEF Tech inside each prototype cable and record which options elicited the strongest responses among a control group of listeners. By gauging actual emotional response, we were able to isolate grid patterns that better conveyed the essence of music. We would then build on these patterns to find additional patterns that performed better than the last. In this way, our latest shielding technology is highly evolved from anything we have ever done before with each shield pattern selected for its ability to not only lower a cable’s noise floor but to also convey a greater sense of musical enjoyment. The net result is the most advanced shielding technology we have ever developed with each model in the Atmosphere X Series gaining a special shielding pattern that best compliments the geometries of ALIVE, EXCITE and EUPHORIA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQuantum Tunneling: SRX Long Duration High Voltage Conditioning\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003eAfter perfecting the most natural-sounding and holographic cables in our history, we set out to take them further with a new high voltage conditioning process that applies a sweeping frequency plot for an extended duration. We experimented with dozens of frequencies in different combinations over a prolonged time period before landing on just the right mix. We even built a new Tesla Coil to handle the excess heat generated during long conditioning sessions. Once finalized, the SRX conditioning process created holographic realism and timbrel accuracy far beyond our previous Tesla Coil conditioning protocol. \u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv itemprop=\"description\" class=\"description bottom\"\u003e\n\u003ch5\u003eFeatures\u003c\/h5\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cstrong class=\"rQesXe MPyX\"\u003eDoubled Silver Conductors\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e: \u003cspan class=\"iNqyIf\"\u003eWhile the Foundation SX utilizes 4 pure silver Air Strings per channel, the Foundation XL \u003c!--TgQPHd|||[]--\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan class=\"rQesXe MPyX\"\u003edoubles this layout to 8 separate 99.9999% pure monocrystalline silver conductors\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e alongside 4 copper strings. This design creates a faster signal transfer, yielding more body and texture without introducing top-end fatigue\u003cbr\u003e\u003c!--TgQPHd|||[]--\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong class=\"rQesXe MPyX\"\u003eParallel Dual-Cable Build:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e The design utilizes two distinct, parallel cable runs per channel. This keeps individual conductor gauge sizes low to eliminate skin-effect distortion while combining overall mass for tightly controlled low-frequency impact\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong class=\"rQesXe MPyX\"\u003eDielectric:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e A sealed Air dielectric wraps the silver conductors for zero signal coloration\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cstrong class=\"rQesXe MPyX\"\u003eNext-Gen Shielding:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e The XL upgrades the SX’s standard matrix shielding to the \u003cspan class=\"rQesXe MPyX\"\u003eSRX XL UEF Matrix Shield\u003c\/span\u003e. This relies on an entirely new graphene-infused UEF compound that dramatically drops the background noise floor\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cstrong class=\"rQesXe MPyX\"\u003eConditioning:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e \u003cmeta charset=\"utf-8\"\u003e \u003cspan class=\"rQesXe MPyX\"\u003eAdvanced Molecular Conditioning:\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e Both cables undergo a 1,000,000-volt Tesla coil treatment, but the Foundation XL benefits from the \u003cspan class=\"rQesXe MPyX\"\u003eSRX XL High-Voltage Conditioning\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e. This version utilizes longer, continuous sweeping frequency plots to optimize the electron pathways at a molecular level\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003eIncludes \u003cspan class=\"rQesXe MPyX\"\u003eCarbon Tuning Discs\u003c\/span\u003e, which snap onto the cables so you can alter their sonic profile to match your audio system:\n\u003cul class=\"KsbFXc U6u95\"\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eGold Discs:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Adjusts the signature toward a warmer, more liquid, and musical presentation.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003ePurple Discs:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Accents high-frequency extension for an open, airy, and highly detailed soundstage.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cspan class=\"iNqyIf\"\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003cspan\u003e\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e\u003c!--TgQPHd|||[]--\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong class=\"rQesXe MPyX\"\u003eNo Discs:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Can be run bare for a completely un-voiced, neutral signal\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong class=\"rQesXe MPyX\"\u003eTermination:\u003c!--TgQPHd|||[]--\u003e\u003c\/strong\u003e Features 16 point-to-point hand-soldered connections utilizing \u003cspan class=\"rQesXe MPyX\"\u003eSR BoFa Bananas\u003c!--TgQPHd|||[]--\u003e\u003c\/span\u003e or low-mass \u003cspan class=\"rQesXe MPyX\"\u003eSR Silver Spades\u003c\/span\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/li\u003e\n\u003cli class=\"Z1qcYe\"\u003e\u003cspan class=\"iNqyIf\"\u003e\u003cstrong\u003eMade in USA\u003c\/strong\u003e \u003c\/span\u003e\u003c\/li\u003e\n\u003c!--TgQPHd|||[]--\u003e\n\u003c\/ul\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\u003c\/ul\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\u003c\/ul\u003e\n\u003cul class=\"U6u95\"\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch5 class=\"eight columns medium-down--one-whole  omega\"\u003eSpecifications\u003c\/h5\u003e\n\u003cul class=\"KsbFXc U6u95\"\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e8 each Silver Air String:\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eSilver Air Strings: 99.9999% pure monocrystalline silver conductor\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e8 separate conductors\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDielectric: Air (sealed)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShielding: Silver Braid -Quantum Tunneled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e8 each High Current Copper Air String:\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eCopper Air Strings: 99.95% pure copper conductor\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e8 separate conductors\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDielectric: Air (sealed)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShielding: Silver Braid -Quantum Tunneled\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eSR BoFa Banana and SR Silver Spade Connectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBuild Notes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e16 point-to-point hand soldered connections\u003c\/li\u003e\n\u003cli\u003eLevel 2 UEF Matrix Shielding: UEF coating with Graphene is applied directly to connectors significantly reducing the noise floor and allowing a purer signal to transfer with less grain providing more warmth and detail\u003c\/li\u003e\n\u003cli\u003eSilver Solder: 4%\u003c\/li\u003e\n\u003cli\u003eHand build time: 2 hours\u003c\/li\u003e\n\u003cli\u003eQuantum Tunneling: Post Production process, 1 million volts are passed through finished cable providing a “canal” that allows electrons to pass more freely through conductor material and connections\u003c\/li\u003e\n\u003cli\u003eSecondary UEF Blue Treatment originally developed for SR Blue Fuses\u003c\/li\u003e\n\u003cli\u003e5 day Burn-in: 2 step process\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eHand crafted in our California factory\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eAwards \u0026amp; Reviews\u003c\/h5\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1867\/3055\/files\/image_2026-09-14_165146523.png?v=1789384911\" alt=\"\" width=\"410\" height=\"152\"\u003e\u003c\/p\u003e\n\u003ch5\u003eAbout\u003c\/h5\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eSynergistic Research is an American high-end audio manufacturer founded in 1992 by Ted Denney in California, recognized for its handcrafted power conditioners, active cables, acoustic treatments, and UEF tuning accessories. The brand rejects the idea of passive connectivity, employing a holistic \"total system approach\" that relies on active electromagnetic biasing, 1,000,000-volt Quantum Tunneling material treatments, and advanced graphene integration to optimize the electrical and acoustic environment. Their premium product ecosystem—ranging from the single-outlet PowerCell ONE and multi-outlet PowerCell SX line to their widely utilized Purple and Master UEF fuses—is engineered to aggressively lower the system noise floor and maximize dynamic range without introducing traditional current-limiting restrictions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Synergistic Research","offers":[{"title":"Black \/ Banana \u003e Banana \/ 4 Feet [Pair]","offer_id":46270750883923,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"Black \/ Banana \u003e Banana \/ 8 Feet [Pair]","offer_id":46270750916691,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":true},{"title":"Black \/ Banana \u003e Banana \/ 10 Feet [Pair]","offer_id":46270750949459,"sku":null,"price":229990.0,"currency_code":"INR","in_stock":false},{"title":"Black \/ Spade \u003e Spade \/ 4 Feet [Pair]","offer_id":46270750982227,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"Black \/ Spade \u003e Spade \/ 8 Feet [Pair]","offer_id":46270751014995,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"Black \/ Spade \u003e Spade \/ 10 Feet [Pair]","offer_id":46270751047763,"sku":null,"price":229990.0,"currency_code":"INR","in_stock":false},{"title":"White \/ Banana \u003e Banana \/ 4 Feet [Pair]","offer_id":46270751080531,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"White \/ Banana \u003e Banana \/ 8 Feet [Pair]","offer_id":46270751113299,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"White \/ Banana \u003e Banana \/ 10 Feet [Pair]","offer_id":46270751146067,"sku":null,"price":229990.0,"currency_code":"INR","in_stock":false},{"title":"White \/ Spade \u003e Spade \/ 4 Feet [Pair]","offer_id":46270751178835,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"White \/ Spade \u003e Spade \/ 8 Feet [Pair]","offer_id":46270751211603,"sku":null,"price":191990.0,"currency_code":"INR","in_stock":false},{"title":"White \/ Spade \u003e Spade \/ 10 Feet [Pair]","offer_id":46270751244371,"sku":null,"price":229990.0,"currency_code":"INR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1867\/3055\/files\/image_2026-09-14_162827655.png?v=1789383513","url":"https:\/\/theaudio.co\/products\/synergistic-research-foundation-xl-speaker-cable","provider":"The Audio Co.","version":"1.0","type":"link"}