United Studio Technologies UT Twin48, Large Diaphragm Tube Condenser Microphone, Two switchable discrete circuits: 47-style (true cardioid) and 48-style (active cardioid), NOS EF86 pentode tube, UT K48 34 mm capsule with 6 micron 24k gold-sputtered Mylar (PET film), Custom UT BV-8 output transformer (made in the USA), Audiophile polystyrene, tantalum and film capacitors as well as PRP thin-film resistors, Inline EMI/RFI AC input filter, RF output filter, Polar pattern: Omnidirectional, cardioid, figure-8, Frequency range: 20 – 20000 Hz, max. SPL: 137 dB @ 0.5% THD, Inherent noise: 11 dBA, Impedance: 35 Ohm, Includes power supply unit, shock mount, microphone case and 6 Sommer cable, Microphone dimensions (L x D): 265 x 62.5 mm, weight: 1 kg, Dimensions of the power supply unit (W x D x H): 195 x 180 x 92.5 mm, weight: 4 kg