The Telex SR-400 is a 16-channel belt pack receiver designed as part of the SoundMate personal listening system, an ideal solution for assisting the hearing-impaired in environments such as hotels, churches, and exhibit booths. It helps listeners overcome challenging acoustic conditions, including background noise and poor building acoustics, by delivering clear and intelligible audio. The SR-400 features an advanced digital PLL (Phase-Locked Loop) synthesizer that tunes to all 17 narrow-band channels within the 72-76 MHz band, ensuring flexible and reliable performance. When paired with the ST-300 transmitter, its Enhanced Dynamic Range (E.D.R.) technology boosts sound quality even further. A built-in high frequency contour filter and boost switch enhance speech clarity, making it easier to understand spoken content. The receiver is compatible with the HED-2 lightweight headphone and supports a wide range of hearing aid styles, offering accessibility and comfort for diverse users.