The Radial Mix 2:1 2-Channel Summing Mixer makes it easy to combine any 2x signals, whether they're 2x microphones on a single guitar amp or the stereo line outputs of a mixing console. The inputs of the Mix 2:1 feature both ¼" TRS and XLR connectors with ground lift switches to eliminate buzz and hum from ground loops and ensure noise-free operation. There's also a trim control on each input, so if you connect 2x separate mono sources, such as the outputs of 2x microphone pre-amps, they can be attenuated as needed to adjust their output levels. After both signals are passively summed, they feed a single XLR output that can be connected to a powered speaker or the input of a console or recording interface.