HR90K Platinum Series Headpiece Model Number AB-7300-001 ADVANCED BIONICS LLC 12740 San Fernando Rd. Sylmar, CA 91342 USA. The HiRes90K headpiece is used in conjunction with speech processors manufactured by Advanced Bionics. || The Harmony HiResolution Bionic Ear System and Clarion Multi-Strategy Cochlear Implant are cochlear implant systems designed to provide useful hearing to individuals with severe-to-profound sensorineural hearing loss.