High quality Denon Bluetooth adapter. Plugs into any stereo amp, or TV, and turns the device into Bluetooth. Works great for anything you want to be Bluetooth. Comes with the Layen Dock adapter. Can plug your iPod directly to the Denon as well - other adapters available. Check it out online. I paid over $150 for these. They are brand new, in original unopened boxes. Will sell for $45. I bought two and don't need this one.