Synergistic Research Foundation XL Ethernet
Best high-end network cable for audiophiles seeking pure, detailed digital sound.
Experience superior digital audio with the Synergistic Research Foundation SX Ethernet Cable. This cable features 23-gauge solid copper conductors and a specialized dielectric, enhanced by a Dual Silver Mylar/Braid shield with Quantum Tunneled Ground Plane Technology. Advanced UEF Graphene Shield coatings on connectors and cabling significantly reduce noise for improved warmth and detail. A unique Three Stage Quantum Treatment aligns metal elements at the molecular level, optimizing signal flow for exceptional musical realism. Meticulously hand-crafted in SR's California factory, it represents the pinnacle of network cable performance.
$449.00
Owner Satisfaction
4.6
/ 5
Category Rank
895
/ 6543
#895 in Network Cables
Price vs Category Average
+25%
Above average
Conductor Material
Solid Copper
/ Solid Copper
Who it's for
- System builders prioritizing long-term durability and premium construction
- Audiophiles seeking a silent background for micro-dynamic detail
- Listeners demanding maximum resolution and musical transparency
Who should skip it
- Budget-conscious buyers wary of diminishing returns on accessories
- Users with limited space or complex, tight cable routing needs
- Skeptics requiring objective proof before making significant investments
Performance breakdown
Noise Floor Reduction
Graphene shielding effectively silences background interference for a pristine digital signal.
Signal Integrity
Quantum tunneling treatment ensures exceptional molecular alignment for optimized data flow.
Build Quality
Hand-crafted California construction reflects premium materials and meticulous attention to detail.
Musical Realism
Delivers a holographic soundstage that brings recorded performances to life.
Data Throughput
Cat7 specifications provide a robust, high-speed pathway for demanding audio streams.
Signal Grain Suppression
Advanced conductor treatments eliminate harshness for a smoother, more natural presentation.
Key Specs
Conductor Material
Solid Copper
Wire Gauge
23 AWG
Maximum Frequency
500 MHz
Conductor Count
8 (4 twisted pairs)
Shielding
Dual Silver Mylar / Braid shield
Dielectric
Solid Polyethylene
Ethernet Category
Cat7
Treatment
3-Stage Quantum Tunneling (1,000,000 volts)
Features
- Lower noise floor with UEF Graphene Shield.
- Enhanced holographic realism and musicality.
- Molecular alignment via 1,000,000 volt treatment.
- Robust Dual Silver Mylar/Braid shielding.
- Conductors treated for reduced signal grain.
- Secondary UEF Blue Treatment applied.
- Hand-crafted in California.
- Smoother digital pathway for purer signal.
What customers say
Audiophiles consistently praise the Foundation XL Ethernet cable for delivering transformative sonic upgrades. The core theme is an immersive listening experience marked by a dramatically expanded, holographic soundstage. Users report exceptional clarity and micro-detail retrieval, bringing new realism to recordings. The cable enhances dynamic contrast, lending an organic flow that mitigates digital harshness. Build quality is universally regarded as superb, reflecting its premium status. While the high cost prompts debate regarding value, dedicated listeners overwhelmingly feel the significant performance gains justify the investment, positioning it as a critical component for ultimate system realization.
Know before you buy
While it meets Cat7 specifications, this cable is engineered with specialized UEF Graphene shielding and a three-stage quantum treatment process. These additions are designed to lower the noise floor and reduce signal grain, which standard networking cables do not address.
No, this cable is designed specifically for high-end digital audio streaming rather than increasing raw internet speed. Its primary purpose is to optimize the signal path for better musical realism and detail in your audio system.
The 1,000,000-volt treatment aligns the metal elements of the conductors at a molecular level. This process aims to create a smoother, more efficient pathway for the signal, resulting in improved clarity and a more holographic soundstage.
Yes, it features a robust dual silver Mylar and braid shield. This construction effectively blocks external electromagnetic interference, ensuring the delicate digital signal remains clean and free from noise.
While it will function perfectly for any standard Ethernet application, its design is optimized for the high-fidelity demands of digital audio. You would likely see the most benefit using it between a network switch and a high-end music streamer or DAC.
The 23 AWG solid copper provides a stable, low-resistance path for data transmission. By using solid conductors rather than stranded wire, the cable minimizes signal distortion and maintains better integrity over the length of the run.
Still have a question?
Ask Hayley anything about this product before you decide.
Ready to buy?
$449