The differences may not be noticeable and is certainly not a major contrast between the Astro A40 TR Headset + MixAmp Pro 2017 and the Astro A40 TR Headset + MixAmp Pro 2019.
The later model of the compared astro headset is equipped with less bass density than the audio of the Astro A40 TR Headset + MixAmp Pro 2017 model, and they convey sound significantly more reliably when go head to head.