Experimental passive acoustic box.
The box can be used for three things
Precise attenuator to change your control voltage precise
With fixed resistor values .
There is a onboard solar panel that you can
generate voltage between zero and 5 voltage
Extremely light sensitive
it has a built-in contact Microphone.
Included a spring that resonate oh for the mic
Everything has a separated output.
Everything is passive and don’t need external power.
Everything is mono mini jack outs.
You can also use it on your guitar pedals.
The name Karl,s box Is inspired and named by the German composer
an important creator and theoretician of electronic and serial
music who strongly influenced avant-garde
composers from the 1950s through the '80s..
On special request And a little bit more cost
we can also make this for banana jack
for use for the people of the buchla or ciat
only 20 made in Amsterdam