wasn't even good enough for background noise
351799
I did not finish watching, wasn't even good enough for background noise.
2818663
I wanted a headset that I could talk through like the one I got with my iphone but this one picked up so much background noise.
2418472
Bought these speakers to add audio to a surveillance camera I have outside, but alas these didn't work.  It's probably my set up, but I didn't get any sound at all, and even when I plugged them into my computer they struggled to equal the sound from my laptop's speakers. I knew going in that these were not powered and for the price wouldn't perform very well, but I guess I was expecting a little more from these speakers. Oh well I tried, so I am giving them to my nephew.
229651
I bought this for my recently deceased Acer Aspire (on which I ran Fedora 20 Linux), which had a broken headphone jack. I thought this would be a solution, but it was not. It would only make noise through the headphones if the computer's volume was turned almost all the way up, and even then it was very bad quality. I don't think this is a software issue because it did "work," I guess. It just was really crappy.
711774
I agree with the other reviewer who said it: this device emits an audible background tone at all times, somewhere in the 1k audio range.  Unacceptable.

Plus, I couldn't really tell if it was working as described.  I tested on the same movie scene (with whisper-quiet dialogue and then loud noises) with and without the device.  If there was any difference, it wasn't obvious to me at all.

Sorry, guys.  This needs work.
33639
VERY low sound out put.  CONSTANT static--sounded like rainfall.  Can't lock in stations. RETURNED
2414499
Total crap.  I use bluetooth headsets primarily for listening to TV through my computer.  The sound from this headset would get so far behind the picture that it was way beyond 'Godzilla' delays.  We're talking like a couple of minutes behind the picture.  In mono mode it kept up a little better, but sounds like garbage.  After struggling along with it only for the time that I was charging the battery on my other headset, it broke (wire pulled out and solder connection snapped off) after only 5 weeks.
2856694
Returned, was not loud enough to project sound from a movie during car rides with extra background noise or radio.
54156
I wanted to love this product. A standard lav with a Zoom h4n is pretty bulky to slip into a pocket so I thought the smartlav paired with an iphone would be the easiest audio setup to slip into a pocket.

Out of the box the mic was too low and vocals were barely coming through on my iphone. So I adjusted the mic gain accordingly until the vocals were coming through and the hiss made the audio totally unusable. I looked through forums for the best settings for the RodeRec app and adjusted to optimal settings. The hiss was still still there.

So I decided to try a test with my iphone earpods headphones w/ mic. Shockingly the iphone headphones mic sounded way better with far less hiss and barely noticeable. I immediately packed up the Smartlav for return.
4480369
I purchased these for conference calls on WebEx.  I have a soft voice and everyone could hear me fine.  They fit a little snug but I think they would loosen up over time.  But I'll never know because after 2 months everyone was complaining of horrible background noise (in my quiet office) and not being able to hear me.  There's no adjustment I could make to fix this.  And it's after the return window.  Waste of money.
4841114
This is simply not good for a noisy environment, like a club or restaurant. Really really bad. I will return them.
3718067
Quality was outright terrible and full of background noise according to a friend, and I couldn't have that so I requested a refund.
2440500
We had to return these headphones.  The idea behind them is good, but the source item had to be turned up to blasting volume to be able to hear it at all on the headphones.  We definitely could not use them in a car or any other area that had background noise.  The seemed well made, but the heavy regulator box is too far up the cord towards the child's head - it would be more comfortable for it to be lower down the cord.  We were disappointed.
1832749
Could never get the speaker volume loud enough to work and then when I was trying to hear playback it wouldn't work.
2203152
The speaker and microphone did not work well at all so I returned it.  Sound quality was poor and folks had trouble hearing me with even the smallest amount of background noise.
4407522
I purchased this mic to create some 3-minute product tutorials. I have a year-old Dell XPS. Using Camtasia software.  In order to hear the video playback I need to disconnect the mic from the USB port. I realize that my XPS has build in speakers. The amount of background noise (even in a quiet apartment) is unacceptable despite trying to eliminate in Camtasia and in the OS.  I looked everywhere online for a solution. Also took my laptop and mic to some computer geeks.  I've fooled around with this mic long enough.  Purchasing another brand.  P.S. when the mic was delivered, no manual was included in the box.
1765067
The resulting audio recording was faint and tinny - no better than the camera mic itself - and you couldn't hear it at all if you were over 8 feet from the mic.  Went out of town and missed the window to return the product.  Thankfully it didn't cost much.