FOUNDATION Series Cables
Build your system on a solid foundation
Foundation Interconnect

Our 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.
Available in Black and White
4 each RCA, 6 each XLR Silver Air String:
- Silver Air Strings: 99.9999% pure monocrystal silver conductor
- 4 separate conductors RCA / 8 separate conductors XLR
- Dielectric: Air (sealed)
- Shielding: Silver Braid -Quantum Tunneled
RCA and XLR Connectors:
- Silver Teflon SR 20 RCA or Neutrik NC3FX-BAG, NC3MX-BAG XLR connectors
Build Notes:
- 8 (RCA) 12 (XLR) point-to-point hand soldered connections
- Atmosphere Level 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
- Silver Solder: 4%
- Hand build time: 2 hours
- Quantum 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
- Secondary UEF Blue Treatment originally developed for SR Blue Fuses
- 5 day Burn-in: 2 step process
- Handmade in our California factory
Foundation Speaker

If 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.
Available in Black and White
4 each Silver Air String:
- Silver Air Strings: 99.9999% pure monocrystal silver conductor
- 8 separate conductors
- Dielectric: Air (sealed)
- Shielding: Silver Braid -Quantum Tunneled
4 each High Current Copper Air String:
- Copper Air Strings: 99.95% pure copper conductor
- 8 separate conductors
- Dielectric: Air (sealed)
- Shielding: Silver Braid -Quantum Tunneled
SR BoFa Banana and SR Silver Spade Connectors
Build Notes:
- 16 point-to-point hand soldered connections
- Level 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
- Silver Solder: 4%
- Hand build time: 2 hours
- Quantum 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
- Secondary UEF Blue Treatment originally developed for SR Blue Fuses
- 5 day Burn-in: 2 step process
- Handmade in our California factory
Foundation Headphone

FOUNDATION Series headphone cables are handmade in our California factory with cutting edge Synergistic Research technologies including Air String Geometries with pure 99.9999% Silver. Another trickle-down technology is our UEF Matrix Shielding that dramatically lowers your perceived noise floor. With a full suite of SR Technologies, you hear resolution and holographic realism that’s never harsh or fatiguing, unlike most pure silver-based cables. In pulling all the stops, we applied a new High Voltage Treatment Process first developed for our Galileo SX World’s Reference Audio Cables. In short, we’ve created the worlds best headphone cables, and we’re confident you’ll love their sound over ANY headphone cable on the market regardless of price. So whether you’ve got a state-of-the-art headphone rig including upgraded headphone cables or if you’re a cable skeptic, FOUNDATION Series headphone cables will prove Synergistic Research is building the highest performance headphone cables on the planet. Now is the time to step up and take the FOUNDATION Challenge and find out just how good your current headphone system sounds with Synergistic Research.
Available in Black and White
Adapter cables
Built with the same Pure 6N Silver geometries, UEF Matrix Shield, Blue Fuse Treatment and Two-stage Quantum Tunnel Treatment as the foundation headphone cables for best possible performance
Destination Connectors:
- 2 Pin Lemo
- 3 Pin Lemo (Focal Utopia)
- MMCX ( Pioneer SR-Master1: Shure SRH1540 and SRH1840)
- Sennheiser Push-Pull (Sennheiser HD820, HD800S, and HD800)
- Sennheiser 2 Pin (Sennheiser HD650, HD600, HDXX)
- Mr.Speakers 4 Pin Hirose (MrSpeakers: Aeon, Ether 2, Ether 2 Closed, Flow, Flow closed
- 4 Pin Mini XLR (Audeze LCD4,3,2,X, XC: Meze Empyrean: ZMF Atticus, ZMF Eikon)
- 3 Pin Mini XLR
- 2.5mm Mono (Hifiman Old Styles)
- 3.5mm Mono
- 3.5mm Stereo (Hifiman current: Ananda, Susvara, HE1000, HE400i, HE500, HE6 and HE650)
- 8 Contact
- SMC
- TRRS (2.5mm and 3.5mm)
Always confirm your connections with your headphone manufacturer.
Additional connections may be available upon request.
4 each Silver Air String:
- Silver Air Strings: 99.9999% pure monocrystal silver conductor
- 4 separate conductors
- Dielectric: Air (sealed)
- Shielding: Silver Braid -Quantum Tunneled
Source Connectors:
- Neutrik 4 PIN XLR
- 3.5mm with 6.35mm (1/4″) adapter
Build Notes:
- 12 point-to-point hand soldered connections
- Atmosphere Level 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
- Silver Solder: 4%
- Hand build time: 2 hours
- Quantum 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
- Secondary UEF Blue Treatment originally developed for SR Blue Fuses
- 5 day Burn-in: 2 step process
- Hand crafted in our California factory