These microphone replacement cores are constructed from foam and sponge materials, delivering durability and longlasting performance in demanding environments. Durable construction for demanding use Constructed from foam and sponge materials, these replacement cores provide reliable, longlasting performance in tough settings. Reliable and clear sound Suitable for musicians, vocalists, and public speakers who need dependable performance and clear sound capture during performances or presentations. Natural, rich sound Enhances your audio with Dynamic Microphone Cores to deliver natural, rich sound for professional performances and recordings. Versatile and compatible suited for studios, KTV, concerts, and live events, providing sound reproduction and resistance to feedback. Compatible with Dynamic Microphone Cores systems. Practical use scenarios Studio recording sessions: worn cores to maintain clean signal and preserve tonal balance. Live performances and venues: maintain consistent sound with strong feedback resistance in loud environments. Public speaking and karaoke events: clear voice reproduction for speeches, presentations, and musical performances.