The DI 10A is a active DI box with midas transformer, extended dynamic range and phantom/battery operation. The DI 10A PRO DI ACTIVE offers the same high headroom, dynamic response and sonic clarity you have come to expect. DI 10A is ideal for interfacing keyboards, samplers and other electronic musical instruments to mixing consoles and faithfully reproduces the character of electric and acoustic instruments, allowing far more of the detail of musical performances to be captured.