Kojo Technology Crystal Eop-G Wins Audio Accessory Magazine Grand Prix 2025 Award
The Kojo Technology Crystal Eop-G has been honored with the prestigious Audio Accessory Magazine Grand Prix 2025 Award, a testament to its groundbreaking innovation and exceptional performance.
The Crystal Eop-G is an outlet plug-type grounding terminal that utilizes advanced electric double-layer capacitors (super capacitors). In addition to the etched electrode structure seen in the Crystal E-G and Crystal Ep, the Eop-G incorporates porous activated carbon, known for its high porosity and countless micropores. This innovation delivers an extraordinary expansion of conductor surface area.
With eight electric double-layer capacitors, the Crystal Eop-G achieves an unparalleled conductor surface area of 80,000,000 cm², equivalent to the size of a football field (105m x 68m). This is approximately 1,200 times larger than the Crystal E-G (68,000 cm²) and more than 7,200 times that of the Crystal Ep series (11,000 cm²). This immense surface area not only strengthens the grounding of individual devices but also ensures the stable operation of entire audio systems.
The Crystal Eop-G’s advancements deliver remarkable improvements in the signal-to-noise ratio (S/N) and the reproduction of three-dimensional soundscapes. Listeners can experience:
Enhanced realism with precise separation of instruments.
Vivid texture expressions and a perfectly balanced frequency response.
Unveiled fine details previously imperceptible in recordings.
The soundstage gains depth and power, with clear outlines and a robust presence. Singers are firmly positioned at the center, while the soundstage expands in all directions—front to back, left to right, and up to down. This immersive performance transcends the limitations of traditional 2-channel audio, ushering you into an entirely new auditory realm.
The Crystal Eop-G stands as a groundbreaking achievement in audio engineering, setting a new benchmark for grounding technologies.
 
A Football Field at the Outlet
The Crystal Eop-G, designed with the size of a standard outlet plug, incorporates 8 electrical double-layer capacitors. This innovation achieves an astounding conductor surface area of 80,000,000 cm²—equivalent to the size of a full football field (105m x 68m).
Crystal Series Features
The Crystal Eop-G goes beyond simply enhancing the GND (grounding) of individual devices. It stabilizes the operation of the entire audio system while building on the “virtual earth” concept of previous models.
With a focus on expanding conductor surface area, the Crystal Eop-G leverages cutting-edge technology and innovative design to achieve a massive grounding surface suitable for elevating the performance of entire audio systems. It also represents a significant upgrade from its predecessor, the Crystal E-G, which previously held the record for the largest conductor surface area in KOJO Technology's lineup.
Sustainable Design with No Waste
The Crystal Eop-G features a modular design comprising three components: the outlet plug, the main body, and the protective cap. These components are designed with male and female threads of identical pitch, allowing for seamless scalability.
By connecting two Crystal Eop-G units, the conductor surface area doubles to an impressive 160,000,000 cm². This expandable design enables users to multiply the surface area as needed. Additionally, the connection process creates extra outlet plugs and protective caps, which can be repurposed into protective covers. This innovative approach prevents part loss and ensures maximum utility, demonstrating KOJO’s commitment to sustainable product design for the modern era.
Crystal Eop-G Specifications
Virtual Ground Terminal: Plug type, compatible with NEMA standard (5-15P).
Conductor Surface Area: Approximately 80,000,000 cm².
Dimensions: Diameter: 38.5mm (1.5 in), Length: 78mm (3.1 in).
Without protrusions: 57mm (2.2 in).
Weight: Approximately 193g (6.6 oz).
The Crystal Eop-G redefines the boundaries of grounding technology, delivering exceptional performance and a sustainable design tailored to the needs of modern audio systems.