The MIX 2:1™ is a simple yet highly useful mixer that passively sums two audio channels down to one. This enables you to easily sum the stereo outputs of a console, recording interface, or portable playback device down to mono, or to mix any two signals together and balance their relative input levels. • Mix two channels to a single mono output • Individual level controls can be bypassed when not in use • Balanced 1/4″ TRS and XLR inputs • Completely passive, no need for power