The Rolls SLC19 is designed to control stereo audio signal levels. Since the unit is passive and requires no power, it can go anywhere in a line level signal path - and does not need to be located near a power source. The SLC19 features 2: 1/4 Tip-Ring-Sleeve and XLR inputs and 2: 1/4" Tip-Ring-Sleeve and XLR outputs.
Applications for the SLC19 include level control for the outputs of keyboards, mic-preamps, mixers to powered speakers, computers to desktop speakers and more. Virtually anywhere a balanced or unbalanced line-level signal needs extra level control - the SLC19 will do the job. It's ideal to use with high-output condenser microphones as it maintains the balanced condition and will pass phantom power.