U-7000 is a PLL Synthesized dual channel UHF wireless microphone system with 16 user selectable channels.
是一个相位锁定频率合成UHF双频道的无线话筒接收系统，具备16 个预设的互不干扰频道供选择。
Pa series amplifiers feature 3 kinds of operating states: double-channel, parallel, and bridging. They are selectable according to different situations.
PA系列功放设置三种工作状态：双声道，并联，桥接可以根据不同的场合选用。
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