SR25 Series Power Cable
SR25 Limited Edition Power Cable.
Conductors are 6-gauge 99.9999% pure mono crystal silver totaling 6 gauge. Only 100 SR25 power cords will be made. Just one of these power cords transformed my reference system on the Berkeley reference DAC. This cable is the power cord against which all others will be measured for years to come.

What’s inside?
Active Electromagnetic Cell
A Cable…and a Power Conditioner.
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UEF Ground Plane
UEF Ground Plane.
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SR25 Carbon Fiber Tuning Modules
Redifining Refinement.
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SR25 Carbon fiber connectors
SR25 Rhodium Carbon connectors.
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SR25 for PowerCell 12 UEF
Unequaled Power.
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SR25 Limited Edition AC Cable specifications:
MSRP
$20,000 / 6ft.
$2,000 per addl. foot
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Construction:
- Each SR25 AC Power Cable is made from 10 seperate power cables - 4 each High Current Pure Solid Silver Strings, 2 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
4 each 14 awg. 99.995% Pure Silver High Current:
- Dielectric: PTFE Air (Sealed)
- Shielding: Active Shielding Technology
- Geometry: 2 Channel
- Listened to determine signal direction before build
2 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 :
- US: 20amp/125v
- International (EU/AU/UK): 16amp/250v
Shielding :
- UEF Active Shielding 3rd generation,
2 each SR 25 UEF Folded Electro-Magnetic Cells:
- Pure Copper Foils
- UEF: Graphene treated pcb
- 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 pcb
- 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
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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 and 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 power 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 low level information through the conductors and provides for the highest amount of realism in your music
- 5 day Burn-in: 2 step process
- 100% Hand Crafted in our California factory

Synergistic Research SR25 Power Cable Review
“Synergistic Research’s complex and difficult-to-manufacture SR25 Limited Edition power cord so stunningly demonstrates the relationship between high-quality power and high-quality sound that it may represent the apotheosis of power-cord design. When I said that the SR25 transformed virtually every aspect of my system’s sound, I wasn’t exaggerating. It was difficult to believe that these improvements were caused by a single power cord, or that my system already contained a high-end power conditioner and cords. Once again, Ted Denney has proven that the simplest circuit is not necessarily the best sounding. Twenty large — enough to buy a new Honda Civic — is a very great deal to pay for a power cord, and most can’t pay it at all. The audiophile masses will take solace in the technologies that I hope will eventually trickle down from the SR25.
Can a $20,000 power cord constitute a bargain? It
Howard Kneller, Soundstage Ultra, September 2018

