Blue plastic circular coin. The material used is IDS composite, a composite material developed for the US military industry. It simultaneously damps vibration and impact noise, improving overall resolution. In particular, it aims to improve the resolution of the low frequencies and the S/N ratio of the mid-high frequencies. Regular price: 4455 yen Diameter: 50mm, Thickness: 6mm ★Set of 3★ ★3 pieces are recommended for small amplifiers, small CD players, headphone amplifiers, network receivers like WIIM, soundbars, subwoofers, etc. There are some stains, but they do not affect the effect. There is an anti-vibration sheet on the back, but it can be removed immediately if not needed. Selected from special composite materials with excellent physical properties and characterized by solving resonance control problems such as acoustic noise, vibration, impact, and aerodynamic distortion, a material with particularly excellent characteristics for audio vibration control. Hybrid type insulators provide more powerful vibration countermeasures (resonance control). They excel in improving low-frequency resolution and high-frequency emotional expression, and are also effective in improving resolution. Thank you for viewing. #A1 PROJECT #Insulator #A50RJ #Vibration Control