The IL series of preamplifiers are small (~ 1" square x 2.2" long), low cost preamplifiers, that are available for those applications where there is a known specific preamplifier specification that will not be deviated from. They are available with a fixed frequency band pass, fixed gain and sensor connection type (single or differential), and the AST sensor pulsing option, each of which is specified at the time of purchase. They use MISTRAS’ standard single Power/Signal BNC.