The PDX30 Stereo Direct Injection Box is a portable dual-channel stereo DI box that delivers superior connectivity and audio performance. Housed in a robust alloy case the PDX30 features XLR balanced outputs and 6.3mm linked inputs/outputs. A built-in ground-lift switch can help avoid noise from ground loops. The PDX30 supports 9V battery or 48V phantom-power operation and is suitable for active acoustic guitars, bass guitars, electric pianos, synthesizers, drum machines, samplers, DJ mixers, CD, DVD and Mp3 players.