| Brand | Unbranded |
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Check the listing for details. J-BOX III Audio Speaker Tester Frequency Response Impedance Measuring Box w/ Mic. Condition: New. Listed at 171.00 USD. The J-BOX III has single ended (RCA) and balanced (XLR) microphone input interfaces, and the built-in MIC amplifier provides a gain of +15dB~+30dB to accommodate microphones of different sensitivities.
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