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The PLI02 Line Isolation Box from Palmer is a dual-channel line-isolating unit for professional use. There is a ground-lift switch, allowing the unit to prevent ground loops that cause hum and interference signals. The box features jack socket and XLR input connectors which accept both male XLR and jack plugs, and an XLR output connector. The Line Isolation Box can also be used to convert balanced and unbalanced signals as well as create a galvanic separation using isolated transformers.