Last Thursday, Denon rolled out the HEOS firmware update, which also introduced a new look for the HEOS app. The update applies to the entire Denon Home series: Your Denon Home range will now be equipped with Alexa voice control. In addition, the Denon Home Sound Bar 550 will have a feature for wireless 5.1 surround sound. This allows the Denon Home 150, the 250, and the 350 wireless speakers to be connected to the sound bar as rear speakers for great surround sound. Also worth mentioning is the sound optimization of the DH 550 through the DSP development tool.