A very versatile 1U rack mountable direct injection box, perfect for studio and line applications. The Behringer DI800 allows unbalanced guitars or other instruments to be converted to balanced signals for connection to mixers and recorders, a good way to keep signals impedance matched to maintain signal strength. There is a link output for connection to monitors or amplifiers. But unlike most active DI boxes the DI800 allows amplified signal to be inserted using the -30db switch. Power to the unit can be supplied by a normal 240Vac mains supply or from the phantom power on your mixer. There is also a =20db boost switch for low level signals.