USB audio transmission presents unique complexities that go far beyond traditional digital interconnects—carrying both power and data while managing RF contamination from computer switching supplies and potential ground loops between your source and DAC. Building on our flagship SRX XL technologies, the SRX XL USB cable conquers these challenges with revolutionary engineering specifically designed for the demanding requirements of high-resolution USB audio. Our all-new UEF compound applied to advanced matrix shielding provides exceptional RF rejection while refined pure silver conductor geometries feature complete separation between signal and power delivery. The primary signal path utilizes two 6N Pure Silver conductors with PTFE dielectric for maximum signal purity, while two separate medium-gauge Silver AirStrings handle DC power delivery with complete isolation from the data lines. This precision architecture eliminates cross-contamination while ensuring pristine signal timing and galvanic isolation, meeting the precise electrical requirements for asynchronous USB audio transmission. The SRX XL USB doesn’t just connect your computer to your DAC—it transforms the interface into a transparent conduit for musical expression. Every cable undergoes our enhanced high voltage conditioning process, delivering USB audio with unprecedented clarity and freedom from digital artifacts. The result is computer-based audio that reveals the full potential of your high-resolution files while eliminating the noise, timing errors, and RF interference that plague inferior USB cables, unlocking new levels of dynamics, soundstaging, and musical authenticity that brings digital streaming and file playback to new heights of analog-like realism. Whether streaming high-resolution files or playing back your digital library, experience how this cable unlocks the musical truth within your computer-based audio sources.

SRX XL UEF Matrix Shielding with Graphene

In our journey to design our latest flagship SRX XL series, we developed an entirely new UEF compound to elevate the performance of our previous Matrix Shielding, which further lowers each cable’s noise floor while lessening restraints a shield may have on signal transmission. We apply this highest level of shielding to our new SRX XL cables for a significant jump in performance over the standard SX. SRX and Master Tuning Bullets developed for the SRX series cables further refines and enhances the loom’s ability to cancel noise that would otherwise cause high frequencies to sound harsh or fatiguing.

SRX + Master Carbon Cable 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

SRX XL High Voltage Conditioning

The new SRX XL High Voltage Conditioning is our most advanced process for treating cables with 1,000,000 volts of electricity at specific frequencies and pulse modulations for long durations, creating a canal in the conductor material and contact points at the molecular level that allows electrons to flow more freely. This new process improves upon the SRX High Voltage Conditioning process by employing new extended duration sweeping frequency plots and advancements to our Tesla Coil, resulting in SRX XL cables to sound even more open and accurate than the cables before them.

UEF Ground Plane

SRX XL USB incorporates the capability to ground your cables to a Synergistic Research Ground Block (sold separately) to elevate the performance even further. Benefits include a noticeable increase in deep bass power and weight, a more holographic sound field, smoother high frequencies with greater extension and ‘air’, a more present and layered mid-range, increased tonal density with an apparent increase in resolution.