The Simplexity is a low gain germanium preamp.  Gain ranges from clean to light overdrive/fuzz. It was designed to showcase the harmonic complexity of the germanium transistor.

Try stacking the Simplexity with your favorite overdrive, distortion, or fuzz to bring out amazing overtones.

The Simplexity is point to point wired and has controls for Sensitivity (gain), 

High Frequncies (treble cut), and Volume.

Powered with a 9v battery or power supply

This newest version features input, output and DC jacks on top to save room.