Stereo Electromagnetic Microphone, Stereo EMF Field Kit Mic, EM Microphone Pickup, Stereo Noise Microphone, EM Noise Pickup passive_0HP the remaining two can be

the remaining two can be used as input/output in either direction

each side has a piezo pickup with it's own output and a water-proof heat shrink wrapping that can even withstand freezing

Micro mix is a super tiny two channel mixer able to fit in just about any patch and is great for both audio and control voltage

no current can flow through either

each VCA contains a DIY optocoupler (vactrol)

Stereo Electromagnetic Microphone, Stereo EMF Field Kit Mic, EM Microphone Pickup, Stereo Noise Microphone, EM Noise Pickup passive_0HP the remaining two can beListen to the electromagnetic world around you in stereo! Two inductive coils in this microphone convert changes in the electromagnetic field into electronic audio signal. Each coil in the microphone has it's own separate output making it truly stereo. Listen to anything that outputs an electromagnetic signal such as power strips, cellphones, computers, iPhones, lights Etc. The stronger the magnetic field, the stronger the output. Output is 3. 5mm