I got the Atomos Power Station from ESV as the price was good. I hadn't been aware of them previously so it was a bit of gamble, but in this instance I didn't need to use the kit the next day so I wasn't worried. And I needn't have been; it turned up next day anyway. I don't like writing reviews without extensively using the kit in question and I only got it yesterday so can't say much, which is why I only gave 4 stars. Nothing wrong (OK, maybe a few niggles, see below), just not enough information yet to say that it is exemplary. First point is, make sure you order the right version, Photo or Video. I had researched this a couple of weeks ago then the day before yesterday quickly got my order in between edit jobs, forgetting to do exactly that. The difference is the Video version ships with adaptors for a wider range of cameras and with significantly bigger (and heavier) batteries. Everything else is the same, even the carrycase which has slots for the missing adaptors. Realising my mistake, I decided I'd take the significant saving of the Photo version as I already have bigger batteries (which you can get for less than the difference between the models anyway, so you could have two medium and two large for less money) and the additional power adaptor I want is another Sony one which doesn't ship with the unit. To save you looking elsewhere, the Photo version ships with 2 dummy battery units with short leads which simply plug into the back of the Power Station - a Sony FW50 style (A7 series, RX10 plus others) and one that will do the GH4. You could run other things from the sockets instead. Although not a kettle or an aluminium smelting plant, just in case you were thinking of it. If you are looking at this item, you'll know you want something to power your camera either from the mains or from batteries with a significantly longer run-time than internal batteries can allow. Having just finished a series of 2 camera shoots in multiple countries using an A7s and an RX10M2 with internal batteries only, my biggest on-set frustration was having to re-set the shot when changing batteries as the lenses revert to default zoom and focus when the camera is switched off, while my biggest logistical frustration was how to charge the eight batteries I was using while also getting some sleep. I expect this unit to help considerably, but can't say yet whether it does. With an external recorder, it also means not worrying about long record times such as shows, conferences etc. The lead from the transformer unit to the Power Station is nice and long - the first can be on the floor while the main part of the unit can be at eye height, keeping strain off the connections. Four more points I can make without having actually used it yet - 1 I have a few NP style batteries, but one pair doesn't fit on the atomos while they work fine on the monitors I bought them for. Fortunately, it looks like I could run the monitor from one of the two USB power sockets on the power station, but I haven't tried it yet. 2 I had a small shoot yesterday and frankly couldn't be bothered with the extra bulk and faff of the atomos, even though I kind of wanted to play with the new toy. 3 One of the questions I had before purchasing the unit was how you could use the dummy power supply unit with the A7s when the battery door would have to be open to let the lead through, yet the pictures show the units attached. The answer is that there is a small rubber cut-out in the battery door of the camera that allows the lead through. I guess they just don't show this in the advertising pictures because it doesn't look that great. No, amend that - it looks amateurish. The rubber cut-out hangs down exactly where the edge of the atomos should be so you have to have the camera and atomos at an angle to each other. They will still work fine, its just annoying. Really annoying. You can also take off the battery door from the A7s, there is a neat little sprung slide so it only takes seconds, but its just one more thing to potentially lose and have to put back on when you want to put the internal battery back in and go light. 4 Another set of NP style batteries I have started charging, but finished with all four green LEDs flashing. I looked up the error code in the manual - Nothing. Checked support on their website - Nothing. Tried to leave a question for support - I couldn't until I'd registered the unit. I couldn't register the unit as the serial number is written so small I have yet to be able to work out what it says. Either that or they have a filter that doesn't accept serial numbers from the Power Station. 5 (ok, I know I said 4 points) Again, I haven't had a chance to try it, but I think if I was using it on a tripod I would mount the camera directly and have the atomos on an arm nearby - if you're shooting on sticks you want stability, not additional flimsy-ness, especially with heavy lenses. Being able to mount it directly to the camera is great for hand held. Having said all that, a unit that provides mains power, plus continuous swap-over battery power, plus battery charging, plus auxiliary power out that fits in the same physical and economical footprint as a single V-lock battery - its got to be quite bad not to be good.