Up for sale is a really cool Sennheiser MKE 2002 binaural recording system. A great way to record real binaural audio. Everything is in good working condition. The system includes a pair of small-diaphragm electret microphone that connect to a power box (takes 1 9-volta battery) and the dummy head. You can also record with these by wearing the microphones as you would a headset. Specifications: Microphone Type - 2 Triaxial Electret Condenser Frequency response - 40-20,000hz Power Supply - 9 Volt battery Signal to noise ratio - 61db