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The PLDB02 Line Driver and Booster from Palmer is designed to balance and boost weak unbalanced signals where signal integrity must be maintained over long cable runs. It provides up to 18 dB of signal boost in 6 dB stages, making an unbalanced -10 dBV piece of equipment compatible with professional studio-level devices. The Line Driver and Booster's balanced output provides signal transfer over long lengths of microphone cable without losing the signal. There are two channels with individual and independent boost switching and the mono summing function enables you to mix two input signals and distribute the signals to two outputs. The integrated power supply operates from 115 to 230 VAC.