Exclusive to the GU828, the built-in ECHO/DELAY sound effect enhances vocal performance, making the sound more expressive. Powered by a Class-D amplifier, it delivers remarkable sound quality through an 8" woofer and a 1" tweeter, offering powerful projection and easily reaching up to 800 people. It is a perfect choice for performances, ceremonies, temples, and venues where strong vocal presence and echo effects are desired. Utilizing advanced UHF wireless technology with 2.4G auto-scan and pairing, setup is quick and hassle-free. The system automatically connects upon powering on, ensuring low-latency transmission, peak quality and interference-free performance. With memory retention settings, performers enjoy reliable and consistent operation every time. Various audio inputs and outputs allow performers to easily manage and adapt multiple audio source connections. With a built-in rechargeable battery that provides up to 6 hours of continuous operation on a single charge, the system easily meets the demands of a full day. AC power support enables extended use, allowing for flexible and user-friendly operation in a wide range of scenarios. The system includes a retractable handle and built-in wheels, making transport simple and convenient, perfect for performers on the move.