The Listen IO is a simple module which gets signals in and out of a Eurorack system by converting to and from normal modular levels. The top section converts any external signal to modular levels by providing up to 30x gain ( 30dB), allowing you to use table-top synthesizers, keyboards, phones/tablets, computers, toys, microphones, etc. in your patches. The bottom section does the opposite: modular signals are converted to normal line level signals. The bottom two jacks can be used as line outs or as headphone jacks, so you and a friend can listen in stereo at the same time. 
Each section has two inputs and outputs for use with a stereo signal or two mono signals. An LED bar graph for each output shows the signal level and clipping.

 Basic Features:

• Line to modular conversion, and modular to line/headphone conversion
• Works with guitars, table-top synths, effect pedals, keyboards, groove boxes, and many microphones 
• Dual mono or stereo conversion
• LEDs show signal level and clipping
• Gain knob allows for wide range of boost or cut
• Headers in back for connecting to Listen Up or DIY adaptor module (1/4”, banana, etc.)
• Two headphone outputs and stereo inputs for use as a compact headphones module

Electrical and Mechanical Specifications:

• Module size:
  • 6 HP Eurorack format module
  • 0.95" (24mm) maximum depth with power cable
• Power consumption:
  • Maximum values: All output jacks shorted to ground, 22Vpp signal on all input jacks, knobs at 100%
  • 12V: 62mA
  • -12V: 55mA
• Line to Mod section (top):
  • Output: 1k impedance
  • Input: 100k impedance
  • Frequency Response: /-0.1dB max deviation, 20Hz – 20kHz
  • Maximum output level: 22V peak-to-peak
  • Maximum gain: 30dB
• Mod to Line section (bottom):
  • Output: 68 impedance
  • Input: 100k impedance
  • Frequency Response: /-0.1dB max deviation, 20Hz – 20kHz
  • Maximum output level: 22V peak-to-peak
  • Maximum gain: 0dB (unity)
  • Channel cross-talk:
    • Test conditions: Test signal input into left Mod In jack. Sine wave at frequencies from 20Hz to 20kHz tested. Result given as a ratio of the appearance of test frequency measured on right Line Out jack to left Line Out jack. Test repeated with left and right jacks swapped. Worst-case results for any channel and frequency reported.
    • 20Hz – 20kHz: <-110dB

Included with the Listen IO:

• 10-to-16 pin power cable
• 2 M3 Knurlie screws

Connect your Listen IO to other  modules or the  using the 

User Manuals: