Donner, Special-I, Singal Converter / Passive DI Box

【Heavy-duty】Professional and multi-purpose direct injection box for stage and studio applications 【High sound quality】Provides impedance and signal matching for the direct connection of instruments to mixers and amplifiers 【Clean and pure 】Ultra-flat frequency response due to renowned Donner LAB-S1 transformer .The transformer also helps eliminate hum and buzz caused by ground loops by isolating the input from the output. 【Robust circuit design】Converts a line or instrument level unbalanced signal to a low impedance mic level balanced signal 【Low noise】Ground Lift switch eliminates typical ground loop problems .Send the thru signal to your amp and the output to the PA system. Transformer isolation eliminates nasty hum and buzz caused by ground loops.