Purchased the q70t sound bar after my old t450 stopped working. Really disappointed with the q70t against the older, cheaper t450. Dolby atmos effect non existent, even though it reads Dolby atmos on the digital display on the front of the soundbar. If you think that you are buying a soundbar that gives you a surround sound experience you will be very disappointed.

I had an issue with excessive sound delay when connected via bluetooth so had to return for refund, but that aside, here are some observations made based on the time I spent with it. The sound bar and sub feel solid, well-constucted and nice to look at. The sound quality was clear in standard mode, but lacking bass in many of the other modes. When connected to a Samsung Q-80T TV in Game Mode the sound bar always reverts to the Game Pro profile setting every time the TV input was changed (PS4 to PS5 for example) or when the TV was turned on. This becomes frustrating as the graphic equaliser settings are discarded when not using Standard mode. The lack of customisation for the other profiles was disappointing as while some showed potential they could have benefitting significantly from some manual tweaks. The SmartThings app integration worked well and was handy considering some of the important functions such as the graphic equaliser are hidden away quite a bit and awkward to access from the remote. The display can only display 4 characters and had a tendency to disappear quickly. There is no permanent display showing whether the sound bar is on or off so it was easy to accidentally leave it on by mistake. It was a little bit of a shame it didn’t have USB playback also, but this becoming less common on modern soundbars.

TL:DR - Great Sound bar and it sounds stunning, however there are some functions that are annoying, and apparently they are intended. First off, it is a stunning Soundbar. The bass isn't too strong. Setup is simple. The sound stage is fantastic. Looks good too (not that that matters too much.) I'm very happy with my purchase. Paired with my Q80T TV, its just great. I'm looking to add the wireless rear speakers too to really make this work. Surround works as expected, however the Atmos is stunning. (Note, don't use a YouTube "Atmos" video to test it, as YouTube doesn't support Atmos.) Afew annoying "features" however: The Q-symphony (or TV+AV sound mode) does not work with the pass through HDMI. Because of the above, if you change from using the HDMI pass through source to another source or app, you have to switch the TV+AV sound mode back on every time. If the TV is set to the Soundbar source (i.e. HDMI pass through), then switched off, the next time the TV is turned on it doesn't turn the Soundbar on (it does with the other sources). I suspect this is a bug because of the HDMI pass through taking precedence over the eArc for some reason. The Sound mode will stay on Game Mode, even when Game mode is turned off (auto or manual). I prefer the Adaptive mode, so have to go into the settings and switch it back on. After talking with Samsung support with these, they are apparently intended function. Which considering Adaptive mode and Q-Symphony are the marketed functions, its strange I have to keep resetting the system back to use them. Its annoying, as in the TV settings you can set each source to be a particular Display setting, but cannot with sound. Even more annoying is that apps inherit the currently active source's Display and Sound setting too. In summary. I love this soundbar for its sound and style and surround support. The HDMI pass through is appreciated (if slightly limited), but some functions are annoying when changing between sources and/or apps.