In addition to its built-in AM/FM tuner, it is XM and Sirius Satellite Radio ready, The DTR-5.9 has support for two zones, with the second zone being stereo and connected either over RCA pre-outs, or speaker wire. The DTR-5.9 has a larger number of HDMI ports than the 4.9, and has built-in upconversion abilities, as well as an extra 10W per channel. Like all DTR receivers, the DTR-5.9 is iPod-ready and has support for automation over Ethernet.