The Colourupter brings the unique mojo of XQP Audio's Optical Disrupter to the Colour format. At the heart of the Colourupter's sound is a classic optical compressor employed in a deviously non-traditional way: instead being converted to a DC control voltage, the audio signal is sent directly to the side chain. This "incorrect" implementation paired with the natural character of the optical element yields a soft, asymmetrical distortion that remains musical even at extreme gain settings. Features Optical element gently slopes waveform without hard clipping Emphasis on bass harmonics creates a larger-than-life low end Compatible with the Colour 500-Series Palette Full, step-by-step assembly instructions and guaranteed support SAMPLES See audio tab for more samples. Audio Resources Assembly Guide v2.5 (most recent) Assembly Guide for older versions Colourupter 2.5 Schematic (PDF) Colourupter 1.0 Schematic (PDF)