Professional Amplifier Audio Transmitter with Noise Cancelling Headphone Set

1. Plug type: straight plug
2. Headphone output audio source: PC/Hifi/TV/DVD/CD
3. Whether wireless: wireless transmitter
4. Uses: family party, large stage party, square dance, fitness, yoga, conference, travel, broadcasting, cinema, etc.
5. Plug diameter: 3.5mm
6. Plug: 3.5mm
7. Wire length: 3m
8. Horn diameter: 40mm
9. Sensitivity: 10dB
10. Frequency response range: 20-20000Hz
11. Distortion rate: less than 1%
12. Impedance: 32??
13. Signal-to-noise ratio 75dB
14. Distortion rate: <1%
15. Frequency response: 30-20,000Hz
16. Transmitter power supply: 420MAH built-in environmentally friendly lithium battery, 9V/1A adapter power supply
17. Headphones must be connected to the transmitter for use
18. Countless headphones can be connected to one transmitter at the same time. The transmitter has 3 channels, and users can choose their favorite music as they like.