The Peavey RAC-1 is a special tubular shape and rich, warm, classic sound with a wonderful transient response that is ideally suited for recording. FeaturesType: Large Ribbon Geometry (LRG) ribbon (velocity) MicrophoneAluminum Ribbon: 2.5 micronPickup Polar Pattern: Figure8Sensitivity: -53dB(0dB= 1V/Pa)Frequency Response: 30 to 18,000HzImpendence: <=200ohmRecommended Load Impedance: 1,000ohmMax. SPL (1% THD @ 1000Hz): 140dBEquivalent Noise Level to IEC 268-4 (A weighted): 17 dBSize: 6 1/2" (165mm) x 3" (76mm) x 2 5/3 (55mm)Weight Unpacked: 2.07 lb(0.94 kg)Weight Packed: 2.07 lb(0.94 kg)Width Packed: 5.5"(13.97 cm)Height Packed: 9"(22.86 cm)Depth Packed: 3.5"(8.89 cm)