The ultra-low voltage phono signal presents the ultimate challenge in cable design—demanding geometries and shielding solutions that can capture the most delicate musical information while maintaining pitch-black backgrounds. Building on our flagship SRX XL technologies, the SRX XL Phono rises to this challenge with revolutionary engineering specifically optimized for phono cartridges. Our all-new UEF compound applied to advanced matrix shielding works in harmony with refined pure silver conductor geometries engineered with strategic electromagnetic coupling and decoupling zones specifically for cartridge compatibility. We’ve scaled up the number of hand-made air-dielectric pure silver high-current conductors while optimizing their spacing and interaction to meet the electrical requirements of both high and low output cartridges. This precision geometry captures harmonic nuance, ambient detail, and holographic realism that brings your vinyl collection to life. The SRX XL Phono doesn’t just transfer your cartridge’s delicate signal—it preserves the soul of your records with unprecedented fidelity. Every cable undergoes our enhanced high voltage conditioning process, transforming your turntable and cartridge into a conduit for vinyl’s authentic voice with remarkable openness and accuracy. The result is analog reproduction that reveals subtle musical textures and spatial cues previously masked by inferior cables, unlocking new levels of clarity, dynamics, and musical authenticity that brings vinyl playback to new heights of lifelike realism while improving soundstage scale, noise floor reduction, and effortless high-frequency extension with enhanced musicality.
Prices.
MSRP $12,995 / 1.25 meter / XLR, RCA or DIN. $2,250 per additional 0.5 meter.
Factory lead time is 3-4 weeks.
Master Tuning Modules
SRX XL cables come standard with the most potent and musical SRX Master and Gold carbon fiber UEF Tuning Bullets in our company’s 30-year history. The bullets are specially voiced for the SRX cable series so you can strike the perfect balance between detail and musicality for your system. Both Gold and Master bullets are handcrafted in our Southern California Factory from carbon fiber and aircraft aluminum, with the Gold bullet 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 Master 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 Master 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 Master bullets when arriving at a bespoke cable loom voiced for your unique system. Note, UEF Tuning Bullets work 100% outside the signal path!
Master Tuning Module’s Sonic Characteristics:
Greater Air and Detail
Musicality
Liquid Smoothness
Gold Tuning Module’s Sonic Characteristics:
Greater Musicality
Greater Liquid Smoothness
Air and Detail
Specifications
Construction:
Each pair of Synergistic Research SRX Phono Interconnect Cables are made from 14 (RCA) or 20 (XLR) separate geometries - 12 each (RCA) 18 each (XLR) 99.9999% Pure Silver mono-filament Air Strings, and 2 each 10awg Silver/Copper Matrix conductors.
Dimensions:
Standard 1 meter lengths. Additional length built to order.
12 each (RCA) and 18 each (XLR) 2nd Gen 99.9999% Pure Silver Mono-filament Air Sting
Silver Air Strings: 99.9999% pure monocrystalline silver conductor
Dielectric: Air (sealed)
Shielding: UEF Ground Plane Technology
Hand crafted in our California factory
2 each 10awg Silver/Copper Matrix:
Silver Copper Matrix: Monocrystalline conductors
Dielectric: PTFE
Listened to determine signal direction before build
Shielding :
SRX XLUEF Active Shielding
Point to Point Wiring
WBT Silver Solder 4%
Quantum Tunneling:
SRX XL Long Duration - Custom
5 Day burn in :
3 Step process
2 each Gold SR25 UEF Tuning Passive Module (DIN connections 1 each):
Optional voicing for maximum information and refinement.
RCA, XLR and DIN Connectors:
Synergistic Research Silver SR20 RCA or XLR
Straight and Right Angle DIN
Build Notes:
Individual EXP Isolated cable geometries for improved vibrational isolation
28 (RCA) and 32 (XLR) point-to-point hand soldered connections
SRX UEF Matrix Shielding: 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 UEF Cell also benefit from dampening effect that UEF provides
4 Termination for SRX tuning Module (Silver and Gold)
WBT Silver Solder: 4%
Hand build time: 8 hours
SRX Long Duration 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.
Secondary UEF Blue Treatment originally developed for SR Blue Fuses
