1. Using UHF640-690MHz frequency band and PLL frequency synthesis phase-locked loop technology, the frequency can be adjusted and four sets can be used simultaneously without interference.

2. Integrated CPU total control, with digital LCD interface display, easy to operate, excellent performance.

3. Adopt multi-stage narrowband high frequency and intermediate frequency selective filtering to eliminate interference signal.

4. Using audio compression expansion technology, the noise is greatly reduced and the dynamic range is enlarged.

5. It has the function of suppressing and weakening the back-transfusion whistle, which can effectively reduce the back-transfusion whistle.

6. The receiver uses multi-stage high frequency amplification, which has very high sensitivity.

7. Multiplex noise monitoring circuit, special single tone locking TONE-LOCKED system, make it have unparalleled anti-jamming characteristics.

8. Selection of excellent wafers and high-quality components, so that the sound quality of the machine is excellent.

9. The maximum use distance of the open space is over 100 meters, and the ideal use distance is 50 meters.