VocoPro IEM-900-ST4Wireless Assistive Listening System with 4 Receivers and 1 TransmitterStereo In-Ear Monitoring (IEM) System – Enjoy a richer, more immersive stereo sound experience for better clarity and depth.Balance Control for Personalized Audio – Each receiver features adjustable left-right balance control, allowing users to fine-tune their mix between two audio sources—perfect for dual-instrument monitoring or simultaneous translation in two languages.Professional-Grade Wireless Audio – UHF transmission delivers static-free, high-fidelity sound across large spaces.Multi-Receiver System – Comes with four bodypack receivers so multiple users can listen simultaneously.Customizable Listening Experience – Each receiver features independent volume control for personalized audio levels.Long-Range & Reliable Signal – Operates on 900 MHz frequency, avoiding interference from common wireless devices.