Klark Teknik DI10A is an active DI Box with MIDAS transformer, extended dynamic range and battery operation. Active DI Box for general and multimedia applications Unique MIDAS transformer design ensures the highest signal quality High head area + 48V phantom voltage from console or battery (not included) Automatic phantom voltage source switching to battery if there is no voltage from the console Level and impedance matching without loading the source Three-band PAD switch High-quality Neutrik XLR connectors and high-impedance 1/4" TRS connectorsEARTH/LIFT switch Transformer-insulated construction ensures electrical isolation Ultra-low noise and system linearity Aluminum housing with rubber protective corners Compact and durable construction Made in the UK