Behringer CD400 Chorus Space-D Digital 3-Dimensional Sound Effects Pedal Add a breathtaking third dimension to your sound or instrument and experience the secret weapon of professional recording studios Real Sound Modeling (RSM) combines state-of-the-art DSP technology with sophisticated algorithms to emulate real acoustic environments Dedicated Depth, Rate, EQ and Level controls for awesome sound shaping Blue status LED for effect on/off and battery check First-class electronic On/Off switch for highest signal integrity in bypass mode