Ears

Available as a fully built module, a “finish-it-yourself” (with the surface mount parts pre-soldered), or a PCB set.

View the assembly instructions and bill of materials here.

Ears is a microphone preamp module with a built-in contact mic for finger drumming, scratching, and more, and will send gates and envelopes with each tap! It’s a perfect match for physical synthesis modules like Rings or Elements, but it can also be the gateway between external audio sources and your modular system.

Features

  • 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.
  • Envelope follower, translating the decaying amplitude profile of a tap into an envelope CV.
  • Gate detector, translating taps into gate signals.
  • Envelope follower and gate detector can process external signals.

Specifications

  • Audio amplifier with 1M input impedance, up to 40dB 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 +8V gate output.
  • Three indicator LEDs: amplifier clipping (red), envelope follower level (white), gate detector activity (orange).

Technical characteristics

  • Width: 4HP
  • Depth: 25mm
  • Current draw:
    • +12V: 5mA
    • -12V: 5mA