Synergistic Research SRX XL AC Power Cable

The Synergistic Research SRX XL AC Power Cable is the company's absolute cost-no-object flagship power cord, engineered without compromise to serve as the definitive world standard in reference-grade audio power delivery. It builds directly on the extreme architecture of the ultra-exclusive SR25 anniversary cord. By utilizing scaled-up amounts of handmade pure silver mono-filament Air Strings alongside an onboard Swiss-made 30V active DC biasing system, the SRX XL acts as a physical Electromagnetic Cell to completely isolate the AC line from incoming distortion. When paired with its custom pure rhodium terminations and an isolated pure silver ground plane, this masterwork cable systematically purges the system noise floor—unleashing an ultra-realistic, emotionally engaging, and completely unconstrained sonic presentation defined by breathtaking micro-dynamics and holographic soundstage scaling.

We were curious what would happen if we took our highest-performance power cord, the SRX, and scaled up the number of its internal hand-made air-dielectric pure silver high-current geometries. So we added 2 additional pure silver 14 gauge high current geometries and 2 additional pure silver AirString geometries to make our highest gauge power cord entirely over the top where high conductive pure silver conductors in an air dielectric are concerned.

Not surprisingly, this took the SRX’s industry-leading dynamics to a whole new level. It also improved nearly all aspects of its performance, including soundstaging, lower noise floor, and increased high-frequency extension with added smoothness for a high-current power cord like no other. We did not, however, expect this to be a new benchmark for all AC applications in a system, from low to moderate-current-demand components like pre-amps and DACs to high-current-demand components like power amplifiers and our PowerCell line conditioners.

And we accomplished a new benchmark in performance without compromising SRX XL‘s flexibility, so it’s easy to connect, even in tight spaces, like behind your rack or furniture. To discover how transformational this new power cord is, audition SRX XL in your system today. Of course, you can audition risk-free to gauge the improvements these exceptional power cords can affect in your system.

Additional SR25 technologies include a pure silver Ground Plane that can be connected to our Active Ground Block for a lower noise floor and added holographic sound staging and dynamic impact and a Swiss Made power supply developed to optimize the pure silver EM Cells. SRX XL has the exact same wall and IEC connectors developed for the SR25 made from Carbon Fiber and special Rhodium contacts selected in blind listening tests for their perfect sonic balance within the sound of the cable itself.

Each SRX XL power cord comes with two carbon fiber UEF Tuning Modules specially voiced for the SRX series so you can strike the perfect balance between detail and musicality for your system. To voice SRX to your system listen to the Gold (warm) and the Silver (detail) bullet and select the option that makes music in your system. Needless to say, this is the most holographic, lowest noise floor and dynamic and musical power cord in our line-up. This power cord is exceptionally well suited for use with our PowerCell 12SE line conditioner as just one SRX can improve the performance of your PowerCell and this improves every connected component in your system. 

Now with Master Tuning Modules ($850/pair MSRP). SRX Cables come standard with the most potent and musical UEF Tuning Bullets in our company’s 30-year history and work 100% outside the signal path. Both Gold and Silver bullets are handcrafted in our Southern California Factory from carbon fiber and aircraft aluminum with the Gold option plated in 24k Gold not only for aesthetic beauty but also to help voice the bullet to its intended role as the most musical option for specific systems. To use SRX Carbon Fiber Tuning Modules, allow your SRX cables to settle into your system for 48-72 hours, and then experiment with your two options on a cable by cable basis. Start by inserting a Gold Bullet and then compare to the Silver option and select the variant that makes music in your system. Gold Bullets have a warm and liquid balance that is also more open and transparent than our other warm-biased tuning bullets. While Silver is more extended and detailed but the option that will work best and sound neutral is totally system dependent. If you voice your SRX cables one pair at a time, you will find one color that works best in most applications, plus a few that perform better with the alternate option. This process is how you will get the best from both Gold and Silver bullets when arriving at a bespoke cable loom voiced for your unique system.

• Pure Silver Core Array: Features a massive configuration of high-current, handmade 99.9999% (6N) pure silver mono-filament Air Strings and flexible pure silver signal path ribbon laminates that run the entire length of the cord
  
• 3rd-Generation Active Shielding: Incorporates an integrated Swiss-made DC bias power supply and SR Quantum Capacitors hidden inside a rigid carbon fiber cylinder housing. This system generates a 30V active bias that acts as a physical Electromagnetic Cell to isolate the AC line
  
• Pure Silver Ground Plane: Outfitted with an isolated Pure Silver Ground Plane. This plane can be linked directly to an external Synergistic Research Active Ground Block to strip away component-level noise and maximize soundstage boundaries
  
• Extreme Tesla Coil Conditioning: Subjected to an extended-duration 1,000,000-volt high-voltage quantum conditioning process via a specialized Tesla Coil. This creates molecular-level pathways in the conductor materials, completely removing electrical bottlenecks
• Ultra-Premium Terminations: Fitted with custom Synergistic Research G08 Pure Rhodium contacts encased in heavy carbon fiber connector bodies, selected via rigorous blind listening tests.
• Master Tuning Modules: Includes interchangeable, non-signal-path Carbon Fiber Master Tuning Bullets to voice the cable's presentation:
  • Gold Bullets: Plated in 24k gold to introduce liquid warmth, organic rich mid-range, and musicality.
  • Silver Bullets: Tuned to deliver ultimate transient speed, high-frequency air, and open acoustic imaging
• Power Distribution Mainline: Because of its massive current capability, the SRX XL is uniquely qualified to serve as the primary feed for reference line conditioners like the Synergistic Research PowerCell. Putting a single SRX XL on the main conditioner filters the power baseline for every downstream audio component connected to the system
• Heavy-duty configuration rated at 16 Amp / 250V to easily meet the sudden power demands of giant mono-block amplifiers or ultra-sensitive digital source clocks.
• Hand-Built Quality: Assembled by hand in the California factory, ensuring strict quality control and exact termination standards.
• Point-to-Point Architecture: Built entirely by hand in California with 36 point-to-point hand-soldered connections utilizing a premium 4% silver solder formulation
  
• Made in USA 

Construction

• Each SRX XL AC Power Cable is made from 14  power cables – 6 each High Current Pure Solid Silver Strings, 4 Pure Silver Air Strings, 2 each Pure Silver Air Ribbons, 1 each Pure Copper Mesh Ground Plane, 1 each Pure Copper Active Shield.

Dimensions

• Standard 6 and 8 ft. lengths

6 each 14 . 99.9999% Pure Silver High Current

• Dielectric: PTFE Air (Sealed)
• Shielding: Active Shielding Technology
• Geometry: 2 Channel
• Listened to determine signal direction before build 

4 Each Silver Air String

• Silver Air Strings: 99.9999% pure mono crystal silver conductor  
• Dielectric: PTFE Air (sealed)
• Shielding: Active Shielding Technology
• Geometry: 2 Channel
• Listened to determine signal direction before build

2 each Pure Silver Air Ribbons

• 99.9999% pure silver conductor
• Dielectric: PTFE Air (sealed)
• Shielding: Active Shielding Technology
• Geometry: 2 Channel
• Listened to determine signal direction before build

1 each Pure Copper Ground Mesh

• UEF Ground Plane Technology
• 36 square inches per 6 ft. length

Shielding

• UEF Active Shielding 3rd generation,
• UEF Active EM Cell
• Swiss Made Power Supply
• SR Quantum Capacitors
• Point to Point Wiring
• Silver Solder 4%

Quantum Tunneling

• Custom

5 Day burn in

• 3 Step process

Voltage and current rating 

• 16amp/250v

Shielding 

• UEF Active Shielding 3rd generation,

2 each SR 25 UEF Folded Electro-Magnetic Cells

• Pure Copper Foils  
• UEF: Graphene treated 
• Dielectric: PTFE
• Shielding: Active Shielding Technology
• Housing: Carbon Fiber Cylinder

1 each SR 25 Active Shielding UEF Cell

• • Modified Swiss-made DC bias Power Supply  
  • UEF: Graphene treated 
  • SR Quantum Capacitors
  • Dielectric: PTFE
  • Shielding: Ground Plane Technology
  • Housing: Carbon Fiber Cylinder

2 each SR 25 UEF Ground Plane

• • Pure Copper Foils  
  • UEF Graphene
  • Dielectric: PTFE
  • Conductive Carbon Fiber Ground Sleeve

1 each Black SR25 UEF Active Module

• Completes Active bias circuit 

1 each Gold SR25 UEF Tuning Passive Module

• Optional voicing for increased warmth, liquidity 

1 each Silver SR25 UEF Tuning Passive Module

• Optional voicing for maximum information and refinement. 

Connectors

• Connector Input US: 1 each Synergistic Research G08 Pure Rhodium
• Connector Input Int’l: 1 each Synergistic Research G08 Pure Rhodium Schuko 
• Connector Output US: Synergistic Research G08 Pure Rhodium IEC 15 amp and 20 amp connectors 
• Connector Output Int’l: Synergistic Research G08 Pure Rhodium IEC 15 amp and 20 amp connectors

Build Notes

• 36 point-to-point hand soldered connections
• Hand laminated layers of Silver Ribbon, PTFE Film  Copper mesh
• Folded Hot and Neutral Electro-Magnetic Cells added before Power Supply
• UEF Ground Plane Sleeve added to EM Cells
• Additional UEF Ground Plane added to  supply 
• SR25 UEF Treatment: UEF with Graphene added to entire cable
• 1 Termination for SR25 Active Tuning Module (Black)
• 1 Termination for SR25 UEF Passive Tuning Modules (Gold and Silver)
• Silver Solder: 4%
• Quantum Tunneling: Before the Active power supply is incorporated all connections and cabling are treated with 1,000,000 volts of electricity at specific frequencies and pulse modulations, creating a canal in the conductor material and contact points at the molecular level that lets electrons to flow more freely. This also allows the “Active Shielding” to work more efficiently yielding the maximum amount of  information through the conductors and provides for the highest amount of realism in your music
• 5 Day Burn-in: 3 step process
• 100% Hand Crafted in our California factory

• The Absolute Sound
• Positive Feedback
• SoundStage Ultra

Synergistic 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.