The Kenwood eXcelon KDC-X994 is a higher-end, single-DIN car audio receiver. It is an upgrade over the KDC-X794, adding built-in Bluetooth, which enables hands-free calling and other features when linked with a Bluetooth-capable mobile device. Otherwise, the two receivers are identical: users can control a USB-connected iPod or iPhone via the receiver interface, which displays text on a five-line, backlit LCD. Both also feature AM/FM radio, a CD player and an AUX input. Support for HD and satellite radio requires separately purchased accessories. The receiver outputs up to 50 W per channel and features three 4V preamp outputs.