Listen features two preamplifiers with audio input, level potentiometer and output. The simplest application: Connect a Piezo pickup and start your search for cool sounds. For instance, rubbing the contact microphone against a table or your clothing can get you some cool results. You should definitely try it out!
The Listen module offered here comes with copper applications on the front panel.
3 U Eurorack module, 4 HP wide, 25 mm in depth