Cremat's charge sensitive preamplifiers are relatively sensitive, care must be taken to shield the active electronics from the usual ambient RF interference. The CR-150-BOX-R5 and CR-150-BOX-R5-HV are designed to accept and fully shield the CR-150-R5 evaluation board. We also now offer the CR-150-BOX-D-Sub and CR-150-BOX-D-Sub-HV to power the preamplifiers using the 9-pin cable common in nuclear instrumentation.