Primary difference is that Astro A50 (see image) is wireless, whereas Astro A40 is wired. This article compares the Astro A40 wired headset and the Astro A50 wireless, the 4th Generation of Astro gaming headsets. Mind you though, if you won’t be using the headsets primarily for gaming, then you might better checking out my review of Sennheiser HD […]