Stem Mastering is an enhanced form of mastering which allows more control over the dynamics, frequency isolation & attenuation and troublesome instrumentation.
* This service is not to be confused with ‘Stem Mixing’, as the two services are very different.
You would send 8 or 9 mixed stems (which means you leave all of your processing such as compression, eq, effects etc. switched on and the volumes of the channels set to how you want them), grouped into instruments, such as:
Tops (hats/cymbals/shakers etc)
Build up effects/transitional effects (white noise/filter noise/cymbal crashes etc)
Vocals (if any – must be mixed properly)