Used Synergistic Research Atmosphere UEF Level 4 Speaker Cables for sale.
10 feet in length
Spade to Spade terminations
Excellent condition
 
 
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UEF Tuning Modules are connected to Atmosphere Level 4 cable shields and work outside the signal path to contour the sound of your cables by changing the way your cables resonate. By altering the relationship between signal and ground resonance you take control of the sonic balance of your cables and in the process, the overall sound of your system. 
Atmosphere Level 4 Interconnects come with a Red and Blue Tuning Module.
 
RED Tuning Module’s Sonic Characteristics:
Warmth
Liquidity
Musicality
BLUE Tuning Module’s Sonic Characteristics:
 
Refinement
Detail
Focus
 
Review
"The Synergistic Research Atmosphere X Euphoria cables are nothing short of compelling. They strike the perfect balance of smooth, full, and resolving. It’s a mesmerizing sound that will keep you in your seat – listening for hours upon hours. It sure did for me."
Siao Jer - Audio Bacon - April 2019
 
 
Review
"The Synergistic Research Atmosphere X Euphoria (Level 3) interconnects and speaker cables, along with the Atmosphere UEF (Level 3) power cables, have rekindled my passion for the very best in sound and performance. I had not realized that there was so much more musical information available that could transform my system well beyond flavor or personality."
Robert Youman -Positive Feedback - September 2018
 
Review
At some point, later in life, we acquire fine components, realizing that they will become our "forever" amp or loudspeaker. The Excite SX cables qualify for that status for me. I wish I had reached this level a decade ago. But in the case of Synergistic Research cables, who can really say "forever"? Ted Denney and Synergistic Research are showing no signs of slowing down their creativity or technological innovation.
Rick Becker - Enjoy the Music - April 2022
 
 
Review
"Finally, moving on to the Euphoria Level 3, and once again I heard more of the same. I made out a firmer bass line and more articulate piano playing. The decay of the notes seemed more evident, and overall the sound had noticeably greater subtlety, finesse, and delicacy. There was something more, as I felt more drawn into the music."
Jimmy Hughes -Stereonet - March 2021
 
“By far the quietest power cord I’ve ever encountered.”
Award
“First, compared to the Elements, the Atmospheres had a naturally warmer, more organic, and harmonically fuller sound that lacked the older cables’ relatively sharp edges.”
Award
"Synergistic Research cables and devices, was absolutely thrilling, with tremendous dynamic impact, presence, and detail"
Review
"The Synergistic Research set of cables are expansive in all three dimensions, revealing with resolution and raw details, incredibly quiet in its noise floor with a lot of bass extension in treble energy."
Siao Jer - Audio Bacon - August 2018
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Review
“I just couldn’t find a flaw in the SR Atmosphere speaker cables”
Review
"Once you have heard the difference these speaker cables can make to your system, you cannot un-hear it"
Review
“Better sound for less money from the same manufacturer? My goodness, how often does this happen?”
Review
"I wouldn't have believed they could have made such a difference. Combining the two, there is not much sonic distance between my system now, and those costing hundreds of thousands of dollars"
Review
2017 Product of the Year
 
Atmosphere Level 4 Speaker Cable Specifications:
 
4 each High Current Silver Matrix 2nd Gen:
Silver Copper Matrix: separate ground conductor from shield
Dielectric: Modified Polyethylene 
Shielding: Silver Mylar - Quantum Tunneled
Listened for Signal Direction before build
4 each Tricon  4th Gen:
Silver Copper Matrix: Monocrystal conductors with a separate ground conductor from shield
Dielectric: Teflon
Shielding: Ground Plane Technology
Geometry: Tri-axial
Listened for signal direction before build 
4 each Silver Air String:
Silver Air Strings: 99.9999% pure monocrystal silver conductor  
4 separate conductors RCA / 8 separate conductors XLR
Dielectric: Air (sealed)
Hand crafted in our California factory
Geometry Count:
Each Channel of Level 4 Speaker Cables are actually 2 separate runs of Silver Matrix Alloy 2nd Gen cables plus 2 separate runs 99.9999% Silver mono filament in PTFE air sealed dielectric plus 2 separate runs of Tricon 4th Gen cables.
 
2 each UEF Cell:
UEF: Graphene Silver Ribbon 99.9999% pure monocrystal silver conductor  
UEF: Graphene Copper Ribbon
Dielectric: Japanese Silk
Shielding: Ground Plane Technology
Housing: Carbon Fiber 
2 each Red Tuning Module:
Optional voicing for increased warmth, liquidity 
2 each Blue Tuning Module:
Optional voicing for increased refinement, detail and focus  
SR BoFa Banana and SR Silver Spade Connectors: 
Build Notes:
36 point-to-point hand soldered connections
Individual EXP Isolated cable geometries for improved vibrational isolation of each geometry
Atmosphere UEF 4 Treatment: 2 different UEF coatings with Graphene are applied to UEF Cell, connectors and cabling and ground significantly reducing the noise floor and allowing a purer signal to transfer with less grain providing more warmth and detail. The conductors and ground plane and UEF Cell also benefit from dampening effect that UEF provides
1 Termination for Atmosphere Tuning Module (Red) and (Blue)
Ground Plane Termination
Silver Solder: 4%
Hand build time: 4.0 hours
Quantum Tunneling: After the cable is completely assembled 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 allows electrons to flow more freely. This allows 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
Hand crafted in our California factory