No, there is no aux port. You can not directly connect Jio stb to external speaker and use your LED tv just for display. Update: With automatic firmware update to Jio Stb, now bluetooth devices including bluetooth speakers can be paired directly. Just go to Remote & Accessories menu and search for your bluetooth speaker to connect to Jio set top box. You won't be able to connect Jio Stb directly to external bluetooth speaker as well, although, Jio Stb has bluetooth inbuilt (in fact, Jio stb remote is bluetooth based, not infrared or rf based), its UI has no option to search and pair with bluetooth devices. This feature may be provided in future with ota updates. Moreover, there is one way in which you can connect Jio stb with limited sets of bluetooth speaker -- for this, your bluetooth speaker needs to be smart i.e. you can easily connect your google assistant or alexa based smart speaker to Jio stb as these devices have app to pair with bluetooth devices. So, even though jio stb doesn't have any option in its UI to pair, your smart speaker has bluetooth pairing UI in its app and Jio stb will remain visible to pair. I have connected my echo plus smart speaker via bluetooth to Jio stb and enjoy the audio on it directly.