Synergistic Research HD SX Ground Cables
Best upgrade for audiophiles seeking a quieter, more refined soundstage.
Elevate your audio experience with Synergistic Research HD SX Ground Cables. These cables are meticulously engineered to significantly reduce system noise, revealing a lower noise floor for a more immersive soundstage. Featuring a new single crystal pure six-nines silver conductor and advanced UEF Compound with Matrix Shielding, they deliver exceptional clarity and tonal density. The hand-made AirString Geometry and Three Stage High Voltage conditioning further enhance musicality and refinement, making them ideal for turntables, DACs, and amplifiers.
$250.00
Owner Satisfaction
4.6
/ 5
Category Rank
1189
/ 5746
#1189 in Audio & Video Cables
Price vs Category Average
-54%
Below average
Conductor Material
Single crystal pure six-nines silver
/ Single crystal pure six-nines silver
Who it's for
- Audiophiles seeking maximum resolution and micro-detail retrieval
- Listeners wanting expansive soundstages and improved transient response
- System builders prioritizing advanced electromagnetic interference management
Who should skip it
- Minimalists preferring simple setups without additional grounding infrastructure
- Owners of already optimized systems expecting guaranteed sonic gains
- Budget-conscious hobbyists avoiding ultra-premium accessory pricing
Performance breakdown
Noise Floor Reduction
Effectively eliminates background haze for a remarkably silent playback environment.
Soundstage Expansion
Creates a wider, deeper acoustic space with precise instrument placement.
Tonal Density
Adds a rich, textured weight to notes across the entire spectrum.
Conductor Purity
Single crystal silver construction ensures maximum signal integrity and transparency.
Build Craftsmanship
Hand-made AirString geometry reflects meticulous attention to high-end audio detail.
System Compatibility
Versatile connectivity options integrate seamlessly into most high-fidelity component chains.
Key Specs
Conductor Material
Single crystal pure six-nines silver
Shielding
Matrix Shield
Cable Type
Ground Cable
Available Lengths
1.0 meter, 1.25 meter, 2.0 meter, 3 meter
Certifications
PFO Brutus Award 2015
Connector Types Supported
RCA, XLR
Ethernet Support
Yes
Compatible Devices
Turntables, DACs, Pre-Amplifiers, Power Amplifiers, USB Devices
Features
- Lowers noise floor for superior clarity.
- Enhances soundstage and image outlines.
- Richer tonal density across the audio field.
- Hand-made AirString Geometry construction.
- New single crystal silver conductor.
- Advanced UEF Compound and Matrix Shielding.
- Three Stage High Voltage conditioning.
- Improves overall system musicality.
What customers say
Audiophiles consistently praise the HD SX Ground Cables for their transformative sonic impact. The primary benefit noted is a profound reduction in system noise, creating an inky black background. This silence unveils micro-dynamics and subtle harmonic textures with exceptional clarity and resolution, significantly boosting realism. Users also report major improvements in soundstage dimensionality, resulting in more focused imaging and greater depth. While these cables represent a substantial investment, the consensus is that the performance gains fully justify the cost. They are viewed as essential components for unlocking the ultimate fidelity potential within high-quality audio systems.
Know before you buy
A ground cable provides a dedicated path to drain high-frequency noise and interference from your components. By lowering the noise floor, it allows your equipment to resolve finer details and creates a more stable, expansive soundstage.
These cables are most effective on components sensitive to electrical noise, such as turntables, DACs, and pre-amplifiers. You will likely notice the most significant improvements in clarity and tonal density when connecting them to your source components.
Yes, the HD SX Ground Cables are designed to support both RCA and XLR connector types. This versatility allows you to integrate them into a wide range of high-end audio chains.
The use of single crystal pure six-nines silver minimizes grain and signal distortion that can occur in standard conductors. This results in a cleaner, more refined signal path that preserves the natural texture and musicality of your recordings.
While the cable's construction remains consistent across all lengths, we recommend choosing the shortest length that comfortably reaches your grounding point. This minimizes the potential for the cable to act as an antenna for environmental interference.
Absolutely. Because these cables are designed to mitigate noise, they are highly effective at cleaning up the ground plane of digital devices, which often suffer from high levels of internal electrical noise.
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