Features
1. High-quality transmit with 48k-16bit sampling.
2. Uncompressed transmit.
3. About 100 meters transmit of outdoors.
4. It is easy to use,plug and play.
5. AU680 wireless audio transmitter is a transmitter that enables wireless audio for home entertainment.
6. The product consists of the transmitter and the receiver.

Specification
1. Operating Voltage: Transmitter: DC 3.6V-5.5V; Receiver: DC 3.6V-5.5V
2. Working current: Transmitter: 250mAh; Receiver: 100mAh
3. Ambient temperature: 0-85 degree C (Transmitter and Receiver)
4. The actual operating frequency range of the modual: 749-770MHz (Transmitter and receiver)
5. Modulation: Pi/4DQPSK (Transmitter)
6. Channel spacing: 4MHz (Transmitter and receiver)
7. Frequency selection method: Transmitter: Carrying channel one-way loop selection; Receiver: Provides automatic search and manual conversion of two models
8. Frequency stability: +/-100KHz (Transmitter and receiver)
9. The actual working channel of the modual: 20CH
10. Module channel spacing: 1MHz
11. Transceiver distance (using transmit power 100nv in open space): 100m
12. Transmit power (default is 100nV when ordering): 1-100mV (default 100mV)
13. Receiving sensitivity: -95dBm(Receiver)
14. Input level: 1.0VpK(Transmitter)
15. Input resistance: 10K ohm (Transmitter)
16. Input interface (Transmitter):
- Three input modes
-Stereo audio input
-Normal microphone input
-Monitor pickup audio input
17. Stereo input level 1: 30mW RL=32ohms (Receiver)
18. Stereo input level 2: 50mW RL=32ohms (Receiver)
19. Output impedance: 1k ohms (Receiver)
20. Input-output gain ratio: 1:01
21. Sphere of influence: 20-20000Hz
22. Time latency: 2.5ms
23. Sampling Rate: 48KHz 32bit
24. Signal to noise ratio: 96dB
25. Distortion: 0.3% at 1KHz
26. Dynamic Range:90dB
27. Left and right channel isolation: 85dB

Package List
1. Transmitter x 1
2. Receiver x 1
3. USB power cable x 2
4. Manual x 1