Panasonic Digital Wireless Receiver Unit Compatible with 300 Series (RU-300) This is a set of 3 WX-D3000 units. Can be incorporated into the 300 series system, a standard for professional PA systems. Widely used in live performances, auditoriums, and facility broadcasts. Operation confirmed. While there is a general feeling of use, it can be used without any problems. Accessories Only the 3 main units (everything shown in the photos) *Please prepare antennas/power supplies, etc. Please refrain from purchasing if you are sensitive to used items. No returns or exchanges. Panasonic / WX-D3000 / RU-300 Wireless / Digital / PA / Professional Audio