JBL RAM330 專業(yè)卡拉OK功放機一般要多少錢

JBL RAM330 專業(yè)卡拉OK功放機一般要多少錢技術參數：
功率輸出： 300W+300W 
總諧波失真率： 1KHz, 8Ω, 50W 
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