This item was returned in mint condition. It is free of any performance issues, and has no scratches, blemishes, or other cosmetic flaws.Shure BLX Wireless Systems combine professional quality sound with simple setup and an intuitive interface, for performance you can trust right out of the box. Precision built and available in a variety of handheld, lavalier, instrument and headset configurations, it's the most accessible way to own the stage. The BLX4R is a rackmountable version of the BLX4. It is is a half-rack sized wireless receiver built into a rugged metal chassis. It features advanced capabilities usually unavailable in wireless systems in this price range.