Control is also provided for the 4 internal stereo effects processors – all of which feature the critically-acclaimed BEHRINGER X32 audio processing engine. The user interface is configurable for either simplified access or expert level editing (S/E), for mixing 18 input channels to 12 buses. X AIR for Android® delivers comprehensive control for the X18, XR18, XR16, and XR12 mixers. The X AIR Android® App allows you to control all mixing, processing and effects functions of BEHRINGER's X AIR digital mixer series right from your Android® tablet or smartphone.