Listen technologies LA-430 Intelligent Earphone / Neck Loop LanyardIncorporating an advanced DSP loop driver for an outstanding listening experience, the LA 430 integrated neck loop provides industry leading assistive listening for individuals with telecoil equipped hearing aids and cochlear implants. By providing the proper field strength and flat frequency response from the neck to the listening plane of the hearing aid, the LA 430 optimizes speech and enables a wide range of signal levels for a clear, reliable