Passive Ribbon Microphone. Designed in collaboration with Stephen Sank, the Cloud ribbon mics were given the model number prefix JRS in homage to the late Jon R. Sank, Stephen Sank's father (1934-1998). Known for his work with RCA that produced legendary microphones such as the BK-11 and BK-10A, the senior Sank succeeded RCA's Harry Olson as the guiding force behind the company's continuing development of ribbon microphones. Built upon the shoulders of giant RCA mics, each JRS-34 ribbon is cut, corrugated, and installed by hand in precisely the same fashion as prescribed by Olson. New ideas expand the performance capabilities as well, bringing the design into the 21st century with the addition of custom audio transformers by CineMag Inc., patented rounded magnet technology, internal spring mounted suspension, and more.