Samson VR88 Active Velocity Ribbon Microphone Active Velocity Ribbon Microphone The microphone's element features a 2.5-inch long, 2-micron thin, 99 percent pure aluminum corrugated ribbon, set in a precise flux field created by a precision tooled, neodymium magnet structure. Bidirectional, Figure-8 pick-up pattern Active head amplifier with 48 volt phantom power operation Capable of handling signals with high (135 dB) SPLs (Sound Pressure Levels)