Kojo Technology Crystal Ep Series Ground Terminals
Best virtual grounding solution for audiophiles seeking improved sound clarity.
The Kojo Technology Crystal Ep Series Ground Terminals offer an ultra-compact, plug-type virtual grounding solution designed to enhance audio performance. Utilizing an innovative method to increase conductor surface area, these terminals leverage Kojo's expertise in virtual grounding technology. Available with RCA, Banana, 3.5mm Stereo Mini, or Spade plugs, each unit features gold-plated connectors and a sandblasted brass body for durability and aesthetic appeal. These terminals are engineered to reduce noise and improve the overall clarity of your audio system, making them a valuable addition for audiophiles seeking superior sound.
$199.99
Owner Satisfaction
4.5
/ 5
Category Rank
802
/ 1419
#802 in Electronics Component Connectors
Price vs Category Average
-9%
Below average
Internal conductor
High purity aluminum foil
/ High purity aluminum foil
Who it's for
- Audiophiles seeking a refined and noise-free soundstage
- System owners needing consistent electrical performance
- Quality-focused buyers prioritizing long-term component reliability
Who should skip it
- Budget-conscious listeners wary of high-end accessory pricing
- Skeptics looking for dramatic, immediate sonic transformations
- Casual users wanting a simple plug-and-play upgrade
Performance breakdown
Noise Floor Reduction
Effectively clears background haze for a more transparent sonic presentation.
Build Integrity
Sandblasted brass construction offers both structural durability and refined aesthetic appeal.
Installation Versatility
Multiple plug configurations ensure seamless integration into diverse audio setups.
Surface Area Efficiency
Innovative internal design maximizes grounding potential within a compact footprint.
Signal Conductivity
Gold-plated connectors maintain reliable, low-resistance contact for consistent signal integrity.
Form Factor
Ultra-compact design fits easily into crowded equipment racks and tight spaces.
Key Specs
Internal conductor
High purity aluminum foil
Internal conductor surface area
11,000cm2
Plug
Brass/Gold plating
Body / Cap
Brass / Ni plating
External dimensions (diameter x length)
φ12 x 56.5 mm (RCA), φ12 x 57.5 mm (3.5mm), φ12 x 57 mm (Banana), φ12 x 63.5 mm (Spade)
Weight
26.0g (RCA), 25.0g (3.5mm), 27.0g (Banana), 27.0g (Spade)
Features
- Ultra-compact plug-type virtual grounding terminal
- Increases conductor surface area using an original epoch-making method
- Available in RCA, Banana, 3.5mm Stereo Mini, and Spade plug types
- Gold-plated plugs for reliability and performance
- Sandblasted pear-finish body and cap for expanded effective surface area
- Designed to reduce noise and improve audio clarity
- Plug-type virtual grounding terminal
What customers say
Customers consistently praise the Kojo Technology Crystal Ep Series Ground Terminals for their exceptional build quality and the noticeable improvements they bring to audio systems. Many users report a significant enhancement in sound clarity and depth, attributing this to the product's effective grounding capabilities. While the price point is often mentioned, the consensus leans towards these terminals offering substantial value for serious audiophiles seeking to optimize their listening experience. The meticulous craftsmanship and tangible sonic benefits make them a highly regarded upgrade.
Know before you buy
These terminals act as a virtual ground, utilizing high-purity aluminum foil to significantly increase the conductor surface area. By effectively managing electrical noise, they help lower the noise floor, resulting in improved clarity and detail in your audio playback.
The correct choice depends on the available ports on your specific audio components. You should select the plug type—RCA, Banana, 3.5mm Stereo Mini, or Spade—that matches an unused input or output terminal on your amplifier, DAC, or speaker system.
Yes, these are compatible with most audio components that feature standard RCA, Banana, 3.5mm, or Spade connections. Because they are plug-type devices, they are designed for easy installation into any open port on your equipment.
No, the Crystal Ep series is a self-contained virtual grounding solution. It does not require a physical connection to an earth ground, as it uses its internal surface area to manage noise internally.
Yes, the sandblasted pear-finish on the body and cap is not just for aesthetics. It increases the effective surface area of the metal, which contributes to the device's overall performance in noise reduction.
You can start with a single unit to test the impact on your system, though many audiophiles choose to add them to multiple components, such as both the left and right channels of an amplifier or a DAC, for a more comprehensive effect.
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