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Question: Can this speaker output to other speakers through the audio jack, when connected via Bluetooth?
Document: It's small enough to transport in my purse. I use it for my iphone and my ipad. (both those devices do not have very good internal speakers if you are in an open area)  You can either use bluetooth or use the wire that is connected to speaker. I have used it for a telecon too with my iphone. I did get a comment that it produces feedback if you do not mute your phone and someone else is talking.
Works as promised. It is a little finicky when connecting to it via Bluetooth. It worked well with an iPhone but connecting to a Windows phone, I had to make sure it connected in the correct format to playback. The buttons are also so close together and touchy that if you pick it up during playback it is easy to cause the Bluetooth connection to drop or at least the speaker to go silent so that I had to turn everything off and start it back up to get it to work again.
Already had the wired X-mini II speaker and it's awesome. I wanted to add BT functionality so when I got a text or something while listening to music, I didn't have to lean over to my phone which was 3&#34; away from the attached speaker. With the audio passthru, I can now rock both speakers wirelessly! Personally, I could do without the built in mic for conference calling, but I suppose it's a nice feature that I'll probably never use.
Play your favorite tunes from any Bluetooth-equipped device while you control tracks and volume wirelessly from the X-mini KAI Capsule Speaker. The KAI features Bluetooth v2.1 + EDR with A2DP stereo support for high quality wireless audio wherever you go.
Works great with my iPhone4. Used it a the beach. Played via Bluetooth at least 6 hours great battery life
Got this for my techie husband who complains that his iPad isn't loud enough when watching movies on it. He was very excited to receive this and charged it right away to use, and it paired fine via Bluetooth with the iPad, but he could not get any sound out of it. He adjusted the volume and the mute switches, still no luck.
this is one of four different portable speakers ive tried, and this one is definitely the best. bluetooth is easy, and works perfectly. sound is great, bass is impressive. good high volume. portability is the best you can get for anything that puts out tunes like this. battery time is great. just a great piece of tech.
I received this yesterday and was honestly amazed by the build quality and the specs, and it works in blue tooth mode perfectly. But the only problem I noticed was that when in Bluetooth mode the sound output dropped quiet a bit so I'm not to happy with that. But for this company first try with the Bluetooth I think they did pretty good. And I would hold off from buying this, to get there next Bluetooth speaker which they are very likely to make, To fix the buetooth mode sound drop problem.
The iPad was also silent when the speaker was connected so the iPad had correctly sensed the speaker and had transferred sound over. Hoping this is a fluke...unless the speaker just doesn't work with the iPad 3. Had to return the speaker.
This is an amazing little speaker with excellent sound quality. It can be hooked up to other speakers making them wireless as well.
Answer: Yes, you can connect any standard stereo cable into the output jack and it will clone what the speaker itself is playing.  Would be a cheap way to add a BT receiver to a stereo with a line in.