The Logitech BT receiver and all the other equipment you see in the photos under the piano wer installed by the piano manufacturer.  The Piano comes with an iPod Touch as the user interface and BT range with the Logitech receiver was really poor.

It lost connection as soon as you moved out of the room where the piano was located.

Client would like to control the piano by installing the app on iPad minis that are in in iPort Surface and Table Mounts in the Kitchen and Sun Room but they're too far away to connect.

One of the iPads is about 40ft away and the other is closer to 70ft so I don't think there's any way to make it work over the BT interface.  The Living Room where the piano is located is over 1000sq ft.