The Sony STR-DA4400ES ($1500) is the flagship 7.1 a/v receiver model of the STR-DAx400ES series, "Elevated Standard" (ES), product line announced in a June 26, 2008 press release by Sony. The DA4400ES replaces the previous generation Sony STR-DA4300ES ($1000) and Sony STR-DA5300ES ($1700) released the year before. The 4400ES features 120 Watts of power to each of its 7 channels, supports upscaling to 1080p using its built-in Faroudja DCDi chipset, and boasts 6 x HDMI inputs. It uses the Xross Media Bar (XMB) interface found in the PSP and PS3 for onscreen navigation. The lineup is rounded out by the Sony STR-DA3400ES ($1000) and Sony STR-DA2400ES ($800) and they are expected to become available in July 2008.