1. bluetooth 5.0;
2. three-channel single-channel microphone and musical instrument input port;
3. three-way balanced combination of qan microphone and instrument input port; 4. a stereo line input port;
5. one u disk interface, support u disk internal recording;
6. one tpye_c interface
7. two 3.5 wired live broadcast interfaces; 8. all the way to the 3.5 stereo headphone jack;
9. a 6.35 stereo line output, a qnon balanced line output;
10. support condenser microphone input (ch1 combo socket only); 11. support high resistance input of musical instruments (ch2 single-channel input port only);
12. support mp3 wav wma flac ape music format;
13. support single song or full loop function;
14. support separate adjustment of music and microphone volume;
15. support custom storage and recall;
