The Line level Mix System is a flexible solution for customers who prefer to use their own micpre. The Line Level Mix also ideal for applications where the inputs to Monitor mix are already from a mixer or some other devices that can generate line level signals for all 16 channels of mic inputs. The 4 stereo mixes are available as XLR balanced as well as TRS (direct headphone) for different application scenarios described. The key difference between Mic Level Mix System and Line Level Mix system is the absence of micpre on the box. Otherwise, all functionalities are identical to Mic Level Mix Sytem. Please click on each tab for more information on this specific