Cloudlifter Zi Microphone Activator. Cloudlifter Mic Activators are used by thousands of professionals all over the world to improve the quality of their microphone's sound. The Cloudlifter Zi incorporates this patented technology and variable impedance control into an active DI for guitar players, bass players, keyboard players and more. The CL-Zi provides up to +25dB of ultra-clean gain for XLR microphones and lo-z sources and up to +15dB for 1/4 in. instruments and other hi-z sources, via the Neutrik combination dual-input connector and Hi-Z to Lo-Z CineMag instrument transformer. The Cloudlifter Zi maximizes the instrument or microphone's signal strength and clarity and lowers the noise floor and amount of gain required from the preamp. The premium CineMag transformer, encased in MU metal for optimal shielding, brings out the natural beauty and character of your instrument, while lowering the impedance to mate perfectly with the Cloudlifter's patented Vari-Z interface and phantom-powered gain circuit. By allowing your preamps to operate in a more comfortable gain range, the natural frequency response of the microphone or instrument remains intact and the self-noise of the preamp is drastically reduced. Vari Z Interface = Massive tone control The Cloudlifter Zi has continuously variable input impedance and continuously variable high-pass filtering that works in tandem to create massive tone control in a uniquely beautiful way that can only be accomplished through manipulation of impedance. Having input-Z control that is sweep-able from 150 ohms to 15k ohms allows you to creatively load the microphone's output, or the low impedance output of the CineMag instrument transformer, prior to the CL-Zi's ultra-clean gain stage. This allows you to shape and contour your tone, whether you are using a microphone or going direct with an instrument. Variable High-Pass Filtering = Proximity Effect Control The continuously variable high-pass filtering works in conjunction wi...