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.