A reduced ground spring probe array and a method for controlling the impedance of the signal spring probes in the reduced ground spring probe array. Conventional devices use one or more methods of fixing the various elements together andor onto the semiconductor micro-bench. One or more feed-through holes is created longitudinally through the shell extending from the open end to the closed end so that a wire may pass through the opening. Supply lines form the circuit to desired points of service are passed through stages to stepwise elevate the line pressure to a desired high-pressure level.