Wernfale Passive Audio Attenuator, Line Output Signal Sound Card, Microphone, Microphone Port, High and Low Level Converter + 3.5 Line

What is line output, such as mobile phones, MP3 players, computers, CD players, DVDs and electronic instruments (electric guitars, hair dryers, saxophones, electronic pianos, electronic drums, etc.)? The signal strength emitted by electronic products is about 0.3 vrms to 2 vrms; Local function: reduce the audio signal emitted by the circuit to a small size that can be input into devices with microphone interfaces; Microphone input port requires voltage range 0.01V to 0.1V, if the circuit output signal enters, excessive signal may cause serious distortion. This machine can reduce the signal to a suitable size, so that some audio devices can be input into the sound card or speaker interface, making them produce a reverb effect. It is suitable for some friends who play music to live stream and record videos