Active DI box in a sturdy metal housing (aluminium/steel) with protective corners, silver-blue metallic, internal battery (9 V flashes during operation) is switched off automatically when phantom power is used (LED permanently illuminated), extremely low battery consumption. Battery: 9 V block (not included). Colour: Black.Made in: ChinaUK/EU Power supply included: NoBattery Operation: YesType: DI Box