The MINKEZ's CCU-131 is a high-quality conference system with smart touch buttons. It is simple to install and maintain with delicate design and hand-in-hand cable connection method. Recording, playback, mode, quantity switching, and a volume shortcut key are all included in CCU-131. There are 4 meeting modes available which are FIFO, NORMAL, FREE, APPLY. Besides that, it supports a maximum of 32 microphone units, and limitation on the number of spokesman options for 1, 2, 4, or 6, has no restrictions for the chairman. To ensure clear and good sound quality, adopt a digital equalization module and a noise reduction processing module for audio processing. CCU-131 is with 1 group original audio channel output, connect with an amplifier, and 1 group recording channel output, connect with an external recording device. Besides that, it comes with a recording function and SD interface that allows users to record meeting conversations. The phantom power can be controlled with 48V, and the gain can be adjusted when used with an external mic. For the controller and mic components, a 24V DC power supply is required. Furthermore, the control unit shell is made of metal, and both the shell and the cables are connected to the ground line to ensure that the antistatic 6000V function is maintained.