Mutable Instruments Ears, Eurorack Module, Contact microphone and Envelope Follower, Contact microphone integrated in the front plate reacts to Triggers, Rubbing, Vibrations etc., Amplifier with +40dB Gain, Hi-Z Input for an external contact microphone, Audio-Output, outputs for Envelope-Follower and Gate-Signal, Envelope-Follower Reaction time and Gate-Detector Threshold can be set by way of Jumper, Power requirement: 5 mA (+12 V) / 5 mA (-12 V), Width: 4 Horizontal pitch (HP), Depth: 25 mm