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We are uncertain what bule tube is. However, our Roku based TVs do not currently support Bluetooth. If you are trying to connect a sound bar or speakers you can use the Optical port, or the HDMI ARC port. For Headphones, there is a Headphone jack on the back of the TV, or you can download the Free Roku app for private listening. Furthermore, the YouTube streaming channel is one of the thousands of streaming channels offered through the Roku Channel Store. You can also visit www.roku.com/whats-on to see other streaming channels Roku offers. Hope this helps! Thank you, TCL Customer Support
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