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Established in 2018, FIR Audio is the brainchild of brothers Bogdan and Alex Belonozhko along with their friend Daniel Lifflander. Leveraging over two decades of combined experience in creating cutting-edge in-ear monitors from their tenure at 64 Audio. Their latest flagship series is Frontier Series, which has Xenon 6, Krypton 5, and Neon 4. These include the Customized fit and universal fit model, Kinetic Bass, an advanced conduction technology that delivers deeply resonant and authentic bass tones; ATOM XS, an upgraded version of the ATOM module; and the Open Acoustics System, which utilizes Open Drivers that operate without the need for sound tubes. Additionally, the models boast Rigid Technologies, ensuring unparalleled robustness and ease of maintenance for the in-ear monitors (IEMs).