The Cloudlifter CL-Z features a variable impedance control, Vari-Z, that contours the sound of your dynamic or ribbon microphone. It has a variable impedance loading, sweepable from 150 Ohm to 15 kOhm.||The dual gain setting yields +12dB up to +25 dB of ultra-clean gain for low output, eliminating the crackle and hiss produced by the amps. Cloudlifter allows your mic preamp to work without the unwanted noise or feedback.||Cloud Microphones designed the CL-Z with patented Class A, discreet JFET circuit. This compact unit preserves your mic's natural sound.||The CL-Z is compatible with ribbon, dynamic, tube, power-supply, or battery driven microphones. It is also roadworthy for outdoor gigs such as onstage and broadcast. You can also use this for studio recording.||The direct-coupled, discrete JFET circuitry preserves your signal's integrity while the CL-Z goes to work