HI-SENSITIVITY AUDIO
AMPLIFIER KIT
with EXPERIMENTS

A wonderful kit for experimenters of all ages! Build a rugged, versatile, portable utility amplifier. Then begin to explore the facinating world of the unique sounds made by all kinds of energy - from lightning whistlers on the other side of the world to the stress noise of a bending paperclip. Listen to radar, to light waves, to your computer. Listen to nearby radio signals on any frequency, any mode. In addition to the kit assembly manual you get a fascinating project booklet based on experiments by USAF Engineer Calvin R. Graf as your guide to adventures with the sounds of energy.

FEATURES:

• Amplifier features hi and low Z imputs.
• Switchable Preamp.
• 1.5W output.
• Requires 8 "AA" batteries or external 12-15V DC power source.
• Kit includes many accessories for performing experiments.

T-kit Model no. 1252 Hi-Sensitivity Audio Amp Kit.......... $44.00