It has 2 electromagnetic pick-ups (microphones) to create stereo image on board and amplifier for use with headphones or with other instruments. Compared to older version, main features are stereo amplification, on-board pick-ups, high-fidelity amplifier, better filtering and tighter design. It runs on one 9V battery (included).
Listen to electromagnetic fields! Get one here: http://zvukolom.org/instruments/elektrosluch-2/ http://zvukolom.org