Optical compressor that is built with high grade components and internally powered by 18V, providing loads of gain and sustain on tap. With complete control over attack, release, sustain and ratio, it will allow everything from a heavy squash with fast attack and release to “barely there” subtle compression. The Tone control allows for subtle coloration of the tone, while the Level control changes the overall output and is affected by the sustain and ratio settings. The Sustain control adjusts how hot the signal is, which changes the dynamics of the compression. The Ratio control determines how much the gain reduction affects the signal and the Attack controls how quickly the compressor reacts and starts levelling the signal. This device is true bypass and uses electronic relay based switching, and it can be powered by a standard 9-volt DC power supply. Dimensions: 120.7 x 63.5 x 57.2 mm.