Haun MBC 550, calibrate- and testmicrophone, omnidirectonal, 10 - 20.000 Hz, 126 dB max. SPL, 500 Ohms, 16 - 48 Volt phantompower, XLR-connections, nearly linar frequencyrange, dimensions: 21 x 190 mm, incl. wood case, also for piano or acoustic instruments