explain:

1. Seven segments of microphone are balanced to facilitate the application of tuning, making singing more professional, relaxed and free.

2. Double reverberation front stage design.

3. This machine has the function of suppressing the howling of microphone.

4. Music stimulation effect.

5. Built in electronic frequency divider to realize Subwoofer Audio output with adjustable frequency divider.

6. Four channel audio signal output, middle microphone signal output or microphone plus music signal output.