Check the listing for details. SGPRO SG-DB01 Active Direct Box,Recording Signal DI Box for Musical Instruments. Condition: Open box, Made in China. Listed at 25.00 USD. The SGPRO SG-DB01 Active Direct Box is a high-quality DI box designed specifically for musical instruments. With its SGPRO brand and model SG-DB01, this device provides professional-grade signal processing for recording and live performance setups. Its compact and durable design makes it easy to use on stage or in the studio, offering musicians a reliable solution for connecting their instruments to a sound system or recording equipment. Perfect for those looking to clean up their signal and achieve a pristine sound for their performances.