The AER Colourizer is a preamplifier for instrument or microphone.Simply insert The Colourizer into the signal chain between source and next point in the audio path (e.g. amplifier or mixing desk ) and your signal will be stronger, richer and more stable. It is an ideal recording companion, and also works well to stabilize your feed to the snake in a live environment. Quiet, clean, and made with a rugged build quality, the Colourizer is designed to give you quiet, clean reliable signal for many years without operational inconsistencies.