Mackie has been very consistent in releasing up-to-date and improved versions of its Master Fader app, the controller for the well-received line of DL iPad mixers. Master Fader 4.0 features some fresh new features including a real time analyser on all outputs (!), updated DL1608/DL806 recording/playback view, ability to copy and paste channels and mixes, and a new oscillator for DL32R to generate white noise, pink noise and sine waves with adjustable frequency control. Master Fader 4.0 is available as a free download from the App Store. Check out the video below for more detail on the updates.