I have the DA120, which only supports FM radio. The new DA130 has a DAB reciever. Otherwise, I don't see any big differences.

There are a lot of differences in connections and functionality. The best way to compare them is on the Pioneer website. The 130 has DAB as mentioned above but it looks like it also has a lot more direct functionality with iPhone which the 120 has only partly via HDMI.

The 120 has 2 USB ports and an HDMI input, the 130 has only one USB port.