Rolls MX122 MiniMix Pro Mic/Source MixerThe Rolls MX122 MiniMix Pro is a compact and reliable five channel audio mixer. It's suitable for musicians who need to mix stereo keyboards, sound modules, and other line level sources with a single microphone. Channel 1 is a dedicated microphone input with a 3 pin XLR connector and a mic trim pot. Channels 2 through 5 feature 1 4" inputs divided into stereo pairs, though they can also accept mono signals. Two 1 4" outputs are provided on the rear