Mutable Instruments Ears

Contact microphone/preamplifier, envelope follower/comparator in 4HP
Mutable Instruments Ears
No interest if paid in full within 12 months Learn more
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The Mutable Instruments Ears is Mutable Instruments’ take on Tom Whitwell’s open-source Mikrophonie module – a contact microphone and amplifier. A large palette of organic, physical sounds can be generated by scratching, tapping, and more generally collecting any kind of acoustic waves surrounding your modular case – even speaker feedback. With its built-in envelope follower and gate detector, it can also be the gateway between external audio sources and your modular system.


  • 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 - strike, pick or scratch digital resonators like Rings, Elements or the 4ms SMR
  • High-quality amplification stage suitable for external contact microphones, electro-acoustic instruments like guitars, or plain line-level signals
  • Audio amplifier with 1M input impedance, up to 40 dB of gain
  • External input bypassing the built-in contact microphone
  • Envelope follower with 3 preset attack and release times (adjustable by jumper)
  • Gate detector with 3 preset sensitivity levels (adjustable by jumper) and +8 V gate output
  • Three indicator LEDs: amplifier clipping (red), envelope follower level (white), gate detector activity (orange)

Additional Information

Condition New
Chassis module
Module Slot Count 4hp
Connector Type 3.5 mm
Power Consumption 5 mA +12 V / 5 mA -12 V

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