Terrible sound-expected much better from Sony. The Bluetooth only supports one unit at a time, where most Bluetooth devices keep a menu of the devices that connect with it. With this unit, you have to re-pair if you switch from a phone to a tablet to play music. Adjustments to sound options are as basic as it gets. It also has no "off" control-the unit is always on. The best you can to is shut down the source (radio, Sirius, media etc.) then shut off the screen. Very disappointing unit-I do not recommend it nor would I buy it if I had it to do over.