What makes the Geo-Spark Concept different? That is its designed for very fast, extremely powerful, NEGATIVE, High Voltage discharge of 5.6kV up to 20kA. It is this electric "punch" which makes the difference in the powerful acoustic pulse that provides the resolution and penetration.
Also, by using the Geo-Spark power supplies, the electrode tip-wear is reduced to pratically zero. That means no more electrode consumables and no more interruptions in the survey work. Which in turn means that you are actually saving a lot of time and money!