Missing controller and A/D button ( not needed at all ) is totally 100% functional and everything as been tested . This Marantz SR6400 U1B A/V Surround Receiver is a powerful and versatile device that allows you to enjoy your favorite audio in stunning quality. With its 6.1 channels, Dolby Digital 6.1 surround sound, and banana speaker jacks, you'll be able to immerse yourself in your music like never before. The receiver also supports FM and AM modes, and comes with an OEM remote, making it easy to control from across the room.In addition to its impressive audio features, this Marantz receiver is also sleek and stylish, with a black color that will look great in any home entertainment setup. Its custom bundle includes an analog audio input and 7 outputs, along with AUX and AM inputs. This receiver has been thoroughly tested and is guaranteed to work perfectly, so you can buy with confidence.