The Cloud Microphones Cloudlifter CL-4 Mic Activator is based on Cloud’s award-winning Cloudlifter technology that converts phantom power into an additional +25 dB of ultra-clean gain for low output dynamic and ribbon mics. Cloudlifters solve problems posed by noisy preamps and can be used to drive stronger, cleaner signals over long XLR cable runs. The single rack space CL-4 is simple and compact, featuring four rear-mounted sets of balanced XLR inputs and outputs and is ideal for broadcast, live sound, public address, and professional studio applications.Cloudlifters dramatically improve the performance of passive microphone signals by driving stronger, cleaner signals over long XLR cable runs and providing significant ultra-clean gain, before the mixer or preamp. This allows the microphone’s preamp to operate using much lower gain settings, resulting in significantly reduced noise and improved clarity. The CL-4 is enclosed in a rugged rack-mount enclosure offering excellent shielding and durability.Using patent pending technology that keeps the direct audio path free-and-clear of transformers, capacitors, and resistors, the CL-4 houses Class A, Discrete JFET circuitry that delivers world class, ultra-clean gain while preserving the natural sonic characteristics of the source.Cloud Microphones Cloudlifter CL-4 Features:Provides mics with up to +25dB additional output sensitivity – Four channel, rack mounted versionProvides 2 distinct stages of ultra-clean gainDramatically reduces noise caused by long cable runs and low-gain preampsEasy to use self contained design requires only phantom powerRecommended for use with all passive microphonesCompatible with tube, battery, or power supply driven microphonesSafe for all passive ribbons with no transfer of phantomUtilizes Patent Pending Class A, Discrete JFET circuitryIdeal impedance loading for optimal performance @3KohmsRack mount steel enclosure, for studio, stage and broadcastingFree lifetime limited warranty for parts and labor, with registrationHandcrafted entirely in the USACloud CLOUDLIFTER-CL4 SpecificationsPowerInput Impedance: 3k OhmsRecommended Load Impedance: >5K OhmsConnectivity: 3-pin male/female XLR connectorPowering: 48V Phantom Power (P48 according to IEC 61938)SoundFrequency range: 5 Hz - 80 kHz (-0.3 dB)Gain: Provides up to +25dB of Ultra-Clean Gain with 5k LoadCurrent consumption: 3.1 mADimensionswidth: 533.4 mm (21 in.)height: 44.45 mm (1.75 in.)length: 114.3 mm (4.5 in.)Product weight: 1,506 g (53.12 oz.) Cloud CLOUDLIFTER-CL4 Cloudlifter CL-4 4-Channel Microphone Activator.