Nady RSM-4 Ring-Style Studio Ribbon Microphone Features: Ring-Style Studio Ribbon Microphone Low-tension, 45mm long, 6-micron thick aluminum ribbon design with "large mellow" ribbon audio reproduction Smooth, natural extended lows and highs Numerous recording applications including miking guitar amps and cabinets, vocal and instrument recording and live sound uses Unique ring shape for easy placement Figure-8 pickup patterns with extended "sweet" spots for both front and rear sides Up to 165dB SPL capability for stunning realism Part No. RSM-4 or RSM4