Compact Stagebox is an extension to range of Soundcraft digital live sound consoles,and adds a low-cost expansion option to Soundcraft Vi series, Soundcraft Si series, Soundcraft Vi1 and Soundcraft SI Compact. Soundcraft compact stagebox offers high density of I/O connections in only 4U of rack space. The modular unit is fully configurable but is offered with standard configuration of 32 mic/line inputs, 8 line outputs, 8 channels of AES/EBU outputs and 2 expansion slots for standard Studer D21m I/O cards. The D21m is I/O architecture for Studer as well as Soundcraft digital mixing systems and allows connection to most popular digital formats, including CobraNet, AVIOM A-Net16, Ethersound, ADAT and RockNet. MADI recording interface can also be fitted to the expansion slots. It is possible to equip compact stagebox with an additional 16 mic/line input XLR module instead of the output module, providing 48 inputs. In this case, analogue or AES outputs could will be obtained on D-type connectors via D21m cards fitted to the expansion slots.