The main keyword to describe the work of ProjectSAM is: cinematic. Their libraries are specifically created for film, tv and game composers. Being composers in these industries they know how they want their mixes to sound and come across aspects still missing in the sample world.
The ´ProjectSAM sound´ is best described as deep and warm. Because they offer each library in multiple microphone sets, the samples fit into any mix easily. A second important aspect of ProjectSAM´s philosophy is the focus on unique articulations and effects. In each of their libraries they include playing techniques, instrument combos and cinematic effects that you won´t find anywhere else.