The special “dual” nature of the CSR Hall reverb is, on top of its premium sound quality, what makes it very special: the “easy” mode makes the most used and straightforward controls visible to the user, so that the needed setting can be reached with the turn of just a few knobs. In the “Advanced” mode, the module becomes a “tweaker’s delight” where every single little detail and nuance of the reverberation (like high and low frequency time and damping, diffusion and level of early reflections) really make this reverb processor stand up there with the best of ’em.