ground lift

Ground lift is a switch or dip switch found on pedals, preamps, and DI outputs that eliminates ground hum¹. It is commonly paired with balanced XLR outputs used to send a signal direct to a PA desk, mixer, or studio board¹²³. Sources describe it as a noise-management feature for dealing with ground issues⁴⁵. It appears alongside features such as pads, polarity switches, and cabinet simulation on units like DI boxes and preamps⁶⁷⁸⁹.