Profile: Premier Filters, Inc. is a manufacturer of standard and custom EMI power line filters. Our EMI filter is a passive electrical device consisting of capacitors and inductors arranged in a specific circuit to suppress high frequency noise propagating along equipment and facility power lines. EMI is primarily manifested as harmonic energy/noise generated by sharp changes in circuit currents/voltages. EMI power line filters are bidirectional devices that reduce unwanted noise conducting out of an equipment's power line, as well as from extraneous noise propagating along power line distribution networks.