Radial Engineering Radial MIX 2:1 2 channel stereo to mono mixer, passive, TRS & XLR inputs, XLR out. Part of our AV Components range (audio processing & control), supplied through AV Distribution, an authorised South African distributor for professional audio, video and staging equipment. Available to order -- contact us for lead time. Contact our team if you need help confirming compatibility with your existing setup.