HS Series full-range models feature two response controls with settings that allow them to adapt to the surface acoustics of rooms of varying shape and size. ROOM CONTROL allows you to attenuate the unnatural, exaggerated low-end that can often occur when speakers are placed next to walls, while HIGH TRIM allows for more flexible control of high frequency response. For inputs, HS full-range speakers can accommodate a range of balanced and unbalanced sources such as mixers, keyboards and audio interfaces with XLR and TRS phone jacks