TCI TCI-LIBHP-1.0-FDE: The Liberator HP headset is the next generation in electronic hearing protection. State-of-the-art features of this multi-mode electronics package include human speech isolation and Near Field Communications (NFC) wireless firmware updatable signal processors. The Liberator HP provides enhanced hearing protection in all environments, such as protection from impulse/gunfire noise and high decibel constant background audio, while advanced sound localization provides maximum situational awareness and sound detection. Glass polymer injection-molded Earcups provide excellent durability.