Audio Implements supply the television and security industries with IFB Earpieces and/or listening devices for use in motion picture, television or surveillance applications. The PO-2000 is a 2000 Ohm Transducer (Magnetic Receiver). All Transducers have metal 1/4 nubbins and metal base for long life. * AudioClarifier, Receiver Cord and Eartips sold separately.