Same circuit as Elektrosluch 3+: improved signal-to-noise ratio and extended frequency response
Complete soldering kit with enclosure and battery
Educational — learn how an electromagnetic listening device works
60 dB maximum gain
Open-source design (CC BY-NC-SA)
9 V battery powered
Elektrosluch Mini City is a DIY kit version of Elektrosluch, our open-source device for electromagnetic listening. Build your own device for discovering the sonic worlds of the electromagnetic fields surrounding our every step — just plug in your headphones & explore. The circuit is identical to the Elektrosluch 3+.
The kit contains all the necessary parts, including the plastic top cover and a battery. 🛠️ Build guide
The kit is easy to assemble, but some soldering experience is required. Please make sure you are able to assemble it on your own before you start; if you are not sure what you are doing, find someone around who can help — we are not able to solve build issues over the internet. You will need a soldering iron, solder, a Phillips screwdriver and side cutters for cutting the leads.
Sample recordings made with Elektrosluch 3+, which has the identical circuit
Stereophonic electromagnetic listening device (DIY kit) Power: 9 V battery (user replaceable) Headphone / line output: 3.5 mm (1/8″) stereo minijack External input: 3.5 mm (1/8″) stereo minijack Maximum gain: 60 dB Assembly: basic soldering skills required Operating temperature: −10 °C to +55 °C
Specifications are subject to change without notice.
Elektrosluch Mini City PCB
all electronic components
plastic top cover
9 V battery
Elektrouši — a pair of passive external sensors that plug into the external input for an extended sensing range
Elektroucho Pro — mono passive sensor with XLR output for standard preamplifiers and recorders
