Also known as the “snake oil” products, called so by some.
But I call these audio system tuning devices, or simply –spicing devices. You can look at them as super-saturated concoctions, capable of significantly transforming the sound reproduced by your system. The SpicE is a carefully designed product for acoustic reproduction with years of subjective listening and materials study. It is built and tested to alter the perception of PraT, soundstage width/depth and overall frequency reproduction.
The main advantage of the tuning device is its physical simplicity. You just need to wire it to your system and begin listening. Easy as swapping a cable or tube.
Terminated by a crocodile clip, they work simply by being connected to the appropriate spot of your system. Most common places for connections are:
-Mains power earth
-Device ground plane
-Amplifier output (positive or negative)
-Source/DAC ground
-Lightweight metal chassis.
-Device power supply ground.
-Speaker terminals (positive or negative)
-Driver terminals (positive or negative)