Thread title.
I tried different browsers and I am getting only stereo sound.
Is there a way to get surround on mac os without buying some streaming devices?
If you aren't hearing 5.1 surround sound, it's usually an issue with your device settings.
help.netflix.com
5.1 surround sound is not currently supported while streaming on a computer using Microsoft Silverlight or HTML5. However, it is supported in the Netflix app for Windows 8 and Windows 10. To check if your device supports 5.1 audio, go to any Netflix original to see if there is a 5.1 audio option. If not, your device may not support this feature, or it may need to be turned on. For assistance enabling this feature, visit How do I adjust subtitles, captions and alternate audio on my device?