Eau Rouge CFRP Plug Cover ER-PC5 Vibration Damping and Noise Reduction

High-performance plug cover that simultaneously fulfills vibration damping and noise reduction.

The ER-PC5 is a CFRP plug cover developed to suppress plug "rattling" and provide a high S/N playback environment. It adopts an inner diameter of 38mm, compatible with many power plugs including those from Marinco. Even if advanced noise countermeasures are taken on the power cable side, the plug itself is surprisingly vulnerable. The ER-PC5 fills this gap, bringing out rich energy and smooth acoustic depth across the entire frequency range.

Overwhelming vibration damping performance with high-elasticity CFRP

The unit uses high-elasticity carbon fiber with approximately 3.3 times the tensile strength of standard CFRP longitudinally, and optimally blends medium-strength fibers in the circumferential direction. This structure meets the three elements of strength, rigidity, and vibration damping at a high level, significantly improving vibration decay speed. The 3mm-thick CFRP also has a high electromagnetic shielding effect, creating a quiet environment around the plug.

Effects on music playback — High S/N and rich sense of energy

When attached, the ER-PC5 eliminates subtle “rattling” specific to the plug, creating smoothness and density across all bands. The thickness in the mid-lows, clear midrange, and extended high frequencies are well balanced, and the nuances contained in the music emerge naturally and gently. The vitality of the music and the texture of the air are conveyed livelier, providing a sense that the system’s potential is significantly enhanced.

Remarkable improvement also observed in video systems

The effect is clear not only for audio applications but also for video equipment such as projectors. The black gradation becomes richer, and the video gains depth and dimensionality, almost as if upgraded from SDR to HDR. The synergistic effect of reduced electronic noise and vibration damping offers significant visual benefits.