Sensor Workshop | day 3 28. April 2004 To make our tool more sensitive, we extended our audio amplifier with a simple pre-amplifier. In this way, it was even easier to listen to the radio broadcast. Some of the sounds had even reached a painful volume level. IMG_0985 IMG_0986 IMG_0988 IMG_0989 IMG_0990 IMG_0991 IMG_0993 IMG_0995 IMG_0996 IMG_0998 IMG_0999 IMG_1002 IMG_1003 IMG_1007 IMG_1010