B07Y1PBRCT Mutable Instruments Ears Contact Microphone Eurorack Synth Module

Built-in contact microphone soldered right under the front panel, turning the panel and your entire case into a microphone
Increasingly spaced ridges on the panel, generating sonically interesting pulses or impulse combs when rubbed
High-quality amplification stage suitable for external contact microphones, electro-acoustic instruments like guitars, or plain line-level signals
Envelope follower, translating the decaying amplitude profile of a tap into an envelope CV
Gate detector, translating taps into gate signals