Summary: I purchased this about a month ago and while it was working it sounded fantastic. About a week ago, I started getting dropouts and popping noises. I did some research online and see that its a known issue. I wish this was reported on all the review sites that tout this thing as the bees knees. I called JBL to see if there was a firmware or other fix in place. There is not - their "solution" was to either switch to optical from the TV or change to PCM stereo.
Excerpt: I have purchased other JBL products in years past and the SB400 would get 5 stars if it not for the popping sound that happens around the 1 hour mark. Not sure if it's the signal, an over heating issue, or something else, but the point is, it ruins your TV experience which happened to me during Thanksgiving Football with the family. The design is great, and the sound is fine when not malfunctioning.
Summary: The SB400 was packaged well and was easy to set up. The bar easily connected to the subwoofer, and then via bluetooth to all mobile devices in the house. Hanging the bar didn't seem very stable though, as it has a very loose connection to the cleat you attach to the wall first. Also, I mounted my bar to the wall below the TV, so I had multiple wires going between the two, which the SB400 just doesn't accommodate well.
Summary: I have already had to send this thing back once (advised to do so by JBL); although it was within the amazon return period. I will have to actually return the one i currently have to JBL. The system intermittently chirps/pops (nowhere near as bad or as loud as the first one I had). JBL opened a ticket for me to request future support against, and it looks like I'm going to need it. I am disappointed in this purchase and in the product that JBL provided in this case.
Summary: I thought it would be nice to have HDMI switching, but this unit makes INCREDIBLY LOUD popping sounds at random times. It does sound good, but the noises and popping was unbearable. I got a Harman Kardon SB15 that sounds just as good for way less money. Skip the HDMI sound bars.
Summary: JBL dropped the ball on what could have been a fantastic sound bar. Every aspect of this bar is great except for 2 details. THE GOOD:The sound quality, the connectivity, ease of use and styling are all 5 stars. THE BAD: If you are mounting system consists of tabs on the wall brackets and slots on the bar which is fine for wall mounting.
Summary: The SB400 would be awesome if it wasn't for the snaps and pops that happen when using the HDMI inputs. The Bluetooth works great, the optical input works great, the subwoofer is great, the speakers are better than my Samsung TV's but I think that is mostly because they are pointing at the listener vs. out the back like the TV. You don't notice how bad all the soundbar speakers are until you compare them to something like my old Toshiba 57" rear projection tv.