[Stage 4 Sound Deadening Plan]

The newly added "Stage 4" sound deadening plan further improves sound quality and achieves the ultimate in quietness.
In addition to the previous Stage 3 sound deadening plan, it incorporates premium materials for exceptional quietness and low vibration. Thoroughly tuned down to the finest detail, the interior acoustics thoroughly absorb vibrations and external impacts.

Stage 4 also incorporates the vibration-damping rubber material "Hanenight." Hanenite boasts high vibration-damping properties that are even used in industrial and precision machinery, and is capable of suppressing a wide range of vibrations, from minute to large. This combination of materials

improves low-frequency vibration absorption → tightens door resonance

cuts unwanted high-frequency resonance → thoroughly eliminates sound bleeding

improved sound deadening → blocks external noise for a quieter interior

The result is a dramatic improvement in the clarity, quietness, and comfort of the interior sound. This creates the ideal listening space where you can enjoy music to the fullest.

Summary

"Stage 4" is not just a sound deadening system, but a thorough vibration control system that combines Hanenite material to achieve the ultimate in quietness and acoustic experience.
The difference is clear once you experience it. Come experience the ultimate sound environment.