Secure the attractive pre-order price and save 20 euros (valid for 3 months after release - then 119.99 euros). In recent years, CI technology has continuously evolved. Nowadays, patients with profound hearing loss can also be successfully provided with cochlear implants. This development has been taken into account by the author team led by Jürgen Kiessling in the new edition of his classic work. It has been completely restructured and expanded to include the area of implantable systems. The interdisciplinary approach has remained: all professional groups involved in the rehabilitation of hearing-impaired individuals will find relevant information for their daily work in hearing aid provision. Fundamentals: Audiology, acoustics, and signal processing technology; hearing system technology: conventional hearing aids, solutions for early hearing loss, and current research approaches.