How to Use TR619 Voice Amplifier With Wireless Mic

How to Use TR619 Voice Amplifier With Mic Microphone: when you use a microphone on the loudspeaker in the standby except FM mode, insert the mic comes in the package to the Mic jack, then rotate the Echo button to select the Echo Sound. If you are looking for a Voice Amplifier using in the meetings, get the product TR619 model here: Retekess official contact information: retekess Official Store: RETEKESS EUROPEAN Store: Retekess RU: Email: ali-express@ WhatsApp: 86 15638550861 Facebook: Facebook: Instagram: