Royer Labs R-122V, Vacuum Tube Ribbon Microphone (Figure 8), high output capability, optimal impedance to the ribbon element and low output impedance. Extremely low self-noise, operates from a dedicated power supply High SPL capabilities. Absence of high-frequency peaks, "ringing" and phase shifts. Ribbon element unaffected by impedance/load, heat or humidity. Very low magnetic leakage, equal sensitivity from front or back of element. Consistent frequency response regardless of distance. Rear side of mic records slightly brighter when three feet or closer to sound source. Recommended for guitar amps, acoustic guitar, overheads, vocals, brass and horns. Frequ. Resp.: 30 -15,000 Hz +/- 3dB, Max. SPL: >135dB SPL @ 20 Hz, Dim.: 206mm L, 25mm W, Weight: 300g. Finish: Dull Satin Nickel.