[(Bluetooth Connection)] This handheld vocoder can be connected to accompaniment via Bluetooth, and the wireless connection makes it more convenient for users to use. At the same time, it has a high signal-to-noise ratio (101dB) and dynamic range (106dB), making the output sound clear and layered [(Monitoring Function)] You can synchronize the sound effect after changing the voice through headphones or the device's own speakers while speaking or broadcasting sound. Let the user in time understand their current voice in the state after the voice distortion, which is convenient for adjusting the way of speaking, intonation, etc. according to the actual situation, to achieve a more ideal effect of the voice changer [(With three jacks)] This voice changer can be connected to mobile phones, microphones, headphones, stereos, tablets, computers and other devices. Three jacks provide more connection and expansion options, such as connecting headphones, microphone and external audio devices