TX-37A Universal input transmitter. Built-in test tone for quick and easy receiver tuning. Audio processing eliminates clipping and over-modulation while providing superior sound quality, increased intelligibility and dynamics control. Audio input level meter for visible indication of audio input and levels. The TX-37A transmitter is the core of Gentner assistive listening systems. The transmitter utilizes levelling multi-band compression, peak limiting and the patented Aphex Aural Exciter to process audio for maximum intelligibility and loudness. While other assistive listening transmitters simply increase volume, Gentner’s TX-37A actually enhances the sound quality to increase audio clarity at louder levels. It also eliminates the potential forclipping and over modulation. The transmitter is designed with a compact, steel, 1/2 rack unit chassis. The shielded steel chassis protects the unit from damage and keeps out hum as well as other system noise.