Soundcraft Ui 12 is a 12-input digital mixer with remote control. The Ui series is compatible with iOS, Android, Windows, Mac OS, and Linux devices, and can be controlled by up to 10 devices simultaneously. In addition, the Ui12 and Ui16 feature HARMAN signal processing from dbx, Digitech, and Lexicon, including dbx AFS2, DigiTech Amp Modeling, and more. Both models have storable configuration presets and remotely controllable microphone gain, phantom power, 4-band parametric EQ, high-pass filter, compressor, de-esser, and noise gate on the input channels.

Both mixers offer 31-band graphic EQ, noise gate, and compressor on all outputs, plus real-time analyzer (RTA) on inputs and outputs. It contains 3 built-in Lexicon FX buses: Reverb, Delay, and Chorus. In addition, the mixer controls include Subgroups, Mute groups, and View groups, among others. The Ui mixer series has Show/Snapshot presets with channel configurations. Both mixers also offer work networks for simultaneous control via Wi-fi and Ethernet, in addition to a rugged enclosure for live use.

The Ui12 also has four XLR mic/line combo inputs, 4 XLR microphone inputs, 2 Hi-Z/instrument input channels, in addition to a stereo RCA line input. It includes a 2-channel USB player, in addition to 2 balanced XLR auxiliary outputs, 2 headphone outputs with volume control, plus balanced stereo XLR and 1/4" main outputs. The 2-channel USB playback is compatible with mp3, WAV, and AIFF.