Features Condenser Pressure Gradient Capsule: CK12 Polar Pattern: Cardioid, Omni and Figure 8 Frequency Range: 20Hz / 20kHz Maximum SPL: 132 dB Description Product Description TELEFUNKEN Elektroakustik is proud to offer matched stereo sets of their ELA M 251E large diaphragm tube microphone, featuring a custom dual power supply capable of powering both microphones at one time, and a special locking flight case that will carry both sets of microphones, cables, wooden boxes, and the dual power supply. The ELA M 251E is arguably the greatest large diaphragm tube microphone ever built. Sought after by the world's best recording engineers, producers, and musicians in the know, the ELA M 251E offers a real-life sonic characteristic second to no other recording tool or microphone. The microphone features a new CK12 capsule (built from the original manufacturers technical specifications), a European made output transformer built to match the original, and a microphone-grade GE JAN 6072a vacuum tube. Stereo microphone techniques are often used for recording classical music and large signal sources like orchestra, choirs, and large chamber groups. They can also effectively be used on drum overheads, acoustic guitars, piano, and percussion. The TELEFUNKEN ELA M 251E Stereo Set will allow versed recording engineers a variety of stereo recording techniques, including X/Y coincidental pairs when utilizing the mics in their cardioid patterns, or A/B spaced pairs while using the mics in either cardioid or omni. The option of a Blumlein pair is also available with both microphones set to figure of 8, as well as the traditional M/S (mid / side) technique when using one mic in cardiod and the other in figure of 8.