Hi,
In addition to the individual brass instruments, MIR PRO offers a choice of the full ensemble. For example, "Dimension Horns (All)" instead of "Dimension Horn P1".
Individual instruments are easy to understand: you are free to place each instrument where you want on the stage. But what about the All presets? What's the advantage of using them, instead of separate player presets? Just computation time, or a different, better blended sound?
Paolo