It does everything well except for keeping the output in ...
347664
It does everything well except for keeping the output in the output tray.  It usually shoots  everything out onto the floor.  It needs a longer tray extension.  I'm going to  epoxy on an extension I ripped off my last printer.
4361666
After a month with this unit, I have to say that it really does do everything that it advertises, and that's great! the Bluetooth cell phone integration is fantastic (and the primary reason I bought it)

The ipod integration? another key feature, but could be better, it works ok with my 5th gen, but refuses to see my iphone.

Menu integration on the ipod is fair at best, but thats the fault of the user interface, the same interface with a cool ipod-like volume swirl motion that unfortunately as others have said does everything but adjust the volume, if you're listening to the radio, and you aren't perfect in the 'volume swirl motion' it'll change your channel. While you use a swirl motion like an ipod click wheel, it *only* works for volume, you can't use it to help navigate the menus when you have an ipod full of music. Imagine trying to reach an artist whose name starts with M when it starts at A or Z, and you have to go up and down one page at a time, and only by holding your finger on the touch screen because the remote? it doesn't let you navigate menus.

The interface is the downfall here, if the interface was better, or the remote could replace touching the panel, this would head unit would get solid 5 stars from me, as it is, the hardware gets 5 stars, the software gets 1, and that averages 3.

I'd really like to see updated firmware to fix the dreadful interface, or even a new front panel that has a volume control that doesn't make you take your eyes off the road and risk accidents.
3695627
It does everything that it is billed to.  No issues with peripherals working when switching back and forth.  The only issue that I've had is that the screen resolution on the monitor sometimes changes to a lower value.  Not sure if that is the switch or the computer.
3384236
Works well, but it's a little less powerful than I expected.
4958006
This item works great as long as you know the stats for power output from each side.  The included material does not explain this well.  80% of the power comes out of the front and 20% of the power comes out the back.  If you take this into consideration when placing the repeater you will have a much better outcome.  Mine accomplished what I wanted.
2035056
Bought this about a year ago. Used as a portable power source for portable digital audio recorders (Marantz 670, Tascam DR680 and Zoom F8) for location recording. Works great in that capacity. Decently light weight and portable.

But -- I can't turn it off. The ON/OFF switch doesn't work. After a full charge, the LEDs stay on regardless of switch position. So, after about a week, I have to put it on the charger or just leave it on the charger all the time. It would be nice to just pack it in the bag with the recorder ready for the next gig, but I can't trust it to be ready, willing and able to run the machine at a moment's notice without slapping it on the charger for several hours to freshen it up.

Inconvenient, but not insurmountable. I could get inside and re-wire the switch, but it should have been wired correctly during assembly.

I'd probably buy another one if I could be assured it was wired correctly.
4207578
This is a good, well built piece of hardware that does exactly what it claims. I used it to power my entire network including a NAS for a short time in the event of a power failure and to give the NAS time to shut itself off properly. I also have a similar CyberPower UPS, and in comparison, this seems to provide more accurate run time estimates. It's also significantly heavier, which at least gives the impression of higher quality.

Unfortunately, it has one rather significant drawback: there's no way to turn off the alarm (aside, possibly, from the Windows-only software APC provides). If the power goes off and I'm home, either lights will turn off or I'll be asleep and don't gain anything from being woken up. If I'm away, there's similarly no point to the alarm. The alarm is certainly an important feature, but the ability to turn it off is equally so.
2418020
I had my technician hard wire this device into my van.  The power output is sufficient for most needs and the double plug is handy.  The only thing I wish is had was a switch less easy to bump 'on' by accident or a auto-off feature to prevent draining that battery should the unit be left on unused too long.
2927805
it does everything I need it to. frees up a two way radio that I typically use to monitor freqs. The high the freq you listen tot he hotter it gets. small CPU fan works well to solve that. not a complaint just a fact of life with electronics.
4127199
I've had one of these since 2015, and I use it frequently. It works, it's stable, and it's very handy. I would have given it five stars, but the built in voltage meter is off about 0.5 volts on the output side. It is easy enough to verify voltages with another multi-meter, and so it does not detract from it's utility.

Edit: Oh, one other thing...the product description says the device has green, and red LED's. Mine has two red. The nearest LED to the display is Input, and the other is Output.
2449849
I'm knocking one star because if you run your video game audio through it - it will sometimes let out deafening noise through your speakers. As a Pro Tools interface it is far more reliable than the supposedly much higher end Apollo Twin I replaced this with. Pro Tools doesn't freeze or crash nearly so often with the Fast Track Duo, and I'm not constantly having to turn the thing on and off to get the sample rates to sync up. Of course that has to do with the fact that Fast Track only records at one sample rate: 44.1Khz and possibly 48 KHz as well. If you have a great Preamp, you don't need the benefit of Apollo's built in preamps which are not as world class as people say - maybe marginally better than the preamps in the Fast Track.  It's a USB2 Interface and as opposed to Apollo's USB3 interface or the incredibly fast Thunderbolt Interfaces Apple users can take advantage of, but I find that relatively slow data flow doesn't hold me back - just as 128 Bits is hardly advantageous over 64 Bits. You'll miss out on recording live at high sample rates, but if you record from sample software, all of those products are recorded at the compatible 44.1KHz Fastrack is geared to. It's worth getting just for the activation card for the latest version  of Pro Tools with free upgrades for a year. It does work!
692895
When it's working, it's great.  Provides a nice clear strong wifi signal, but I wish it had memory backup or something.  Everytime you lose power or disconnect the power cord by accident, have to re-enter all the wifi information.
3588375
I bought this device to sit between my receiver and three devices which output audio only through an optical cable.

All in all, it does the job very well. My one doesn't heat up and it is on 24/7. The cables click into the back in a  very sturdy manner - the build quality is excellent for a device at this price point.

I'm dropping one star only because the angle of reception for the infrared remote is pretty poor. My unit stands on its side (vertically) and I have to be pointing *right at* the device to get it to pick the signal up. All my other home theater components work well from reflected light (I can point my remote at the opposite wall and miraculously the cable box changes channel). If your unit isn't behind a closed door in a stand this might not be so much of an issue for you.

Highly recommended.
2590131
This Belkin performs exactly as described and does a good job of it- I think.  I haven't had a power outage since buying it, and never had the battery kick in due to "brownout".  The reason why I'm disappointed is because it can't handle very much.  I was hoping it would be able to protect/regulate both my tv and surround sound stereo.  Instead, it can barely handle my tv (65" plasma) which is 750 watts.  Almost all the time, the meter is maxed out, and if there's a bright image on my tv, it starts its warning beep meaning its overloaded and will shut down soon if not alleviated.  If all you have is a tv smaller than mine, you should be fine.  If you have anything additional like a surround sound receiver, or Xbox 360, then pick something bigger- which is probably going to cost you twice as much.  If I had known, I would've bought something much bigger or not bought anything at all.
2922718
It does what it is meant to do very well. My only complaint is that the leg press cable will sometimes come out of the track, but that is a miner inconvenience.
1069892
It does exactly what I expect it to do.  My only grievance is that it has a rather wide girth, and it gets in the way of adjacent USB ports.
4719988
It works well, but whenever you turn any button on or off, other attached devices flicker. I suggest keeping all buttons on at all times.