Founded in 2018 by longtime IEM pioneer Bogdan Belonozhko, Fir Audio exists to offer many necessary and unique accessories for all IEM owners. Fir Audio was born out of nearly a decade of experience in designing and manufacturing custom IEMs. Their proprietary acoustic technology like the RCX connector, Tubeless high-driver, Tubeless shell design, and Atom-X modules ensures terrific sound quality and better hearing protection. FIR uses 3D printing technology to ensure all their custom IEMs have the perfect fit for their customers. Reliability and the highest possible quality of sound are critical to their IEM investment, that’s why FIR Audio offers skillfully hand-crafted products, providing what should be provided for a high-end product.