Cloudlifter amplifiers use phantom power for your pre-amp, interface, or mixer to provide up to 25 DB of ultra-clean gain, maximizing your microphone signal strength and clarity. It reduces the amount of gain required from any pre-amp and lowers the noise floor resulting in a cleaner stronger signal that delivers more of the sound of the actual mic itself. The supercharged cloud lifter model CLZ provides new tonal possibilities with continually variable input impedance via a single control (the Vari-Z knob) with a range of 150 ohms to 15k ohms. The Vari-Z knob provides complete control of the character of your microphone by providing the ability to precisely match the ideal manufactured specified impedance of dynamic, tube, and ribbon mics.