The Greer Amps - Lamplight Optical Compressor is a refined, studio-grade compressor for your board. Optical by design, the Lamplighter is the result of some serious R&D to make an effect with a low noise floor, and as transparent as possible but still making the effect useful. The Comp Mix knob will let you dial in just the right amount of intensity for a handful of sweet spots. The three-way toggle selects the speed of the attack, giving you all the flavors of compression one might need. Built with top quality components right here in the USA.