Kept cutting out... I lost my curser ...
599229
Kept cutting out...I lost my curser many times...shutting down and restarting my whole computer was the only way to get it working again...got frustrated and returned it...
336705
Can I give this 0 stars?! I must've received a lemon because I can't go 5 feet away without the signal cutting out! This product is dead to me! I wish I could get a refund or replacement! Amazon please help me! I ended up by the GTD Audio U-35H and hope to get the lapel versions later!

Update: I tried the unit inside and it worked better. So I am upping my rating to 3 stars. I will mainly use this for wedding ceremony use. Sometimes they are held outside. I want these to work! I will just have to chance it one day!
242924
No curser! Downloaded ok, but worthless without a curser. Is this some sick joke of a rip-off? Not compatable with windows 7.
1674765
No cut out for front camera had to cut it .. obviously not the correct one....  wrote the company, told them I would send the others back .. no reply or replacement .. If I get a replacement I will put it in my review, but its been a couple of weeks already!!
1266934
Connection was too tight.  Couldn't get a cartridge into the system.  Removed the connector and was able to eventually get a cartridge into it, but I never would have been able to get it back out again if it had been in the system.  Maybe I just got a bad one, but this was totally useless to me as a replacement part for my system.
2144485
They worked well....until the sound started cutting out randomly. Would not buy again. Ive had 5 dollar earbuds that were more reliable. Sad
843762
This is my first foray into T-Class amplifiers and I have to say that I'm not taken with them.

I'm not sure what was up with the unit I got, but it would keep cutting out when the volume knob was turned up beyond about the 3/4 mark. I was using a standar 2-way 8 ohm speaker and tested with sources like an iPhone 5S, the output from a Denon receiver and the output from a Focusrite Saffire Pro 40. I tried varying the output level going to the Topping to verify that it wasn't an input overload causing the problem.

On further investigation I came to the conclusion that either the specs were wrong or I had a bad unit, as the output level was nowhere near what was advertised. With an 4 ohm speaker rated at 87dB at 1w/1m at 1khz, I should get a little under 102dB with the amplifier turned up all the way (3dB volume increase for each doubling of power output). The max volume I could hit was about 96dB before the amp would start cutting out. Up until that point, it worked just fine - I could leave it playing for hours without problems as long as I kept the volume under the point that it would start cutting out. Note - this is a speaker I know well and use often for testing purposes. Other amplifiers gave me the expected output, so I don't believe the speaker used had any significant anomalies to explain the lack of output.

I'm providing this info in case anyone else comes across this - since I didn't have time to get a replacement unit (it was for an install) and test again to see if the original was bad or these actually don't meet spec, I thought others having this info might be useful.
1249212
WAS a great noise cancelling headset....then it just randomly started disconnecting from the blue tooth....sadly, makes me unprofessional if I cannot talk with clients.  Cannot return as it's beyond the return date....how sad.
3241561
Synced with my laptop really quickly and easily. Unfortunately it keeps cutting out and a couple of the keys are sticky, the 0 key constantly sticks and just keeps typing 00000000.....and on and on. It's almost as if it keeps going to sleep in the middle of a sentence and sticks on one character. It is too cheap an item to return it so I will just have to bin it and buy a better quality one from Microsoft or Logitech.
1755095
It randomly died in the middle of the night... CM security sent me a system crashed email at 1:31 am letting me know... How nice of them... Pure sarcasm... Tried every trick to reboot but no such luck. Luckily I had an old cell to transfer my sim card and have a phone to use until I go purchase a new cell. My bluetooth wouldn't connect on this cell either.
2018857
I bought this to that we could attach out Amazon Fire, BluRay player and XBox into one HDMI port and switch between them. It's a great idea, but unfortunately, our feed would constantly cut out to a black screen, disrupting whatever we were watching and playing. Once the splitter was removed, the feed worked fine, so I know it was the splitter and not the cable. Disappointing, since it made switching between devices easier, but having our screen go black every few minutes became to irritating and we disconnected it and don't use it anymore.
1499427
I finally got around to installing it last night.

Unfortunately the sound keeps cutting out :( got so bad I had to disconnect it!

What sucks the most is that I can't even return it at this point.
1079028
Just past 30 days and it won't stop cutting out. It's completely useless now.
2954562
This seemed to be a decent automatic switch when I first used it, but when we added a PlayStation 4 it would cut out randomly, even with no other devices connected. Ended up returning it and getting a Kinivo instead.
2084143
Kept cutting in and out.  Hard to hear, When I turned up volume it sounded like I was in a giant hall.  I will be returning for a full refund plus my Shipping cost to send it back. I also will be canceling the extended warranty.
708177
It kept losing the connection so I stopped using it
1552009
Mine quit after using it once during a class PowerPoint presentation. Lucky I had a spare (different brand) on hand and quickly switched it. Very disappointed, and wish had my money back.