PowerBright 1000W Step Up & Down Japanese Transformer, Power ON/Off Switch, Can be Used in 120 Volt Countries and 100 Volt Countries, Convert from 120V to 100V and 100V to 120V

Ok so, check it. I play a Japan based Mobile crane game called Toreba and, ended up winning a bunch of stuff up to and, including Small Appliances all of which are the Japan standard of using 100 Volts instead of the American standard of 110-120 Volts. The reason why I ended up buying a couple of the 1000 Watt rated boxes(One for the computer area and, one for the Kitchen.I'll add that story too) is because one of the many items that I had won from Toreba was a single person Sandwich Maker. you know, the kind that cuts the sandwich diagonally as it grills it. Anyway, I loved this thing and, would often take it to work with me just so I could make something quick in like 5 minutes time and, then back to it. (Lots of outdoor kind of work) But, one night I noticed that the top part wasn't heating as much and, the bottom section was scorching my bread so I knew it was probably about to out and, sure enough It quit later that night. I opened it up and, all the wiring all looked intact and, everything but, I guess the elements just burned out. So I admitted defeat and, knew that I brought this on myself because I knew that it would happen eventually, I just didn't know that it would happen that quickly (like a month and a half of use) but, I did get some fair bit of use out of it. Now for the story of the Prior-mentioned Kitchen placed box. My wife's coffee pot had stopped work properly and, she needed another one but as luck would have it, I had also won a coffee maker from Toreba as well. Again, it was a Japan standard 100 V unit. So she tried it out and, it worked great but, she mentioned to me that it was kind of difficult to turn it off at the switch(located on the back) because the unit was fairly hot to the touch. Again I chalked it up to Over-volting. I knew that I didn't want to burn out the coffee maker just as quickly as I did the Sandwich Maker so I starting looking for converters to lower the voltage and, after a little bit of searching, landed on these units here. After looking at a fair amount of the small appliances that I had won, I had see that none of the Watts had gone over 750 so I bought a couple of the 1000 Watt rated unit to give myself a little wiggle room. So after they arrived, I plugged one into the kitchen and, then her 100V coffee pot into it for her to try the next morning and, the result was instantaneous. It brewed her coffee and, she reported that the coffee pot wasn't too hot to the touch anymore to be able to turn it off. Ok cool, mission accomplished. Even now as I'm writing this, I'm using the Step down unit in tandem with a small 23cm wide electric grill 100V at my computer desk for a small meal. It really does work wonders and, was totally worth the buy. In fact, if I might even end up buying a third to take with me to work so I can use some my small appliances at work to make a quick meal and, back to it. If you have any plans of traveling to a place that has a 100V standard or you happen to have small appliances that use it, I would highly recommend this. Now, on the other hand, I haven't tested out the 120V option yet because I haven't had a reason to yet since I can just plug things into a normal outlet. Thank You for your time.

It works. It will allow one to run a Japanese device in the US. It will allow one to run a US device in Japan. NOTE: If you are planning to use this product in Japan, it does have the standard US grounding third prong. Also regarding the plug, some US products have a wide blade on one side, but this product does not. The blades on this plug are symmetric and will fit a Japanese socket that has been modified to accept the grounding prong.

effective for my Japanese items. I wish it could be redesigned to be smaller and lighter. Despite its size, it works well for converting between 120V and 100V.

I bought the VC-1000J variant, rated at 1000 watts to power a Japanese stereo pre-amp and power amp. Max wattage draw of these amps is in the ballpark of 500-600 W. So far its been working just fine. Been about 3-4 months. I see a lot of 1 star reviews talking about how the transformer Keeps blowing fuses, and that makes me concerned that people are buying transformers with too low a wattage rating for what they're plugging in. Make sure you're not pulling too many watts through these things - and some extra headroom doesn't hurt. That's why I got the 1000 instead of the 500, even though I may have been able to get away w/ the 500 as long as I wasn't turning the amps up all the way. The further below the wattage limit, the safer you are. Of course, maybe they Just have bad quality control and I just happened to get a good one where others didn't, but I've only got one data point, so I can't speak to that.

Baller. This thing transforms most excellently.

Bought this to power a Japanese headphone amp. I've only been using this for a few months, but I haven't run into any issues. It's got a fuse (and a replacement fuse too), so it offers some protection. Overall, very satisfied with this transformer.

This works great! We are stepping down our 110 volt electric service to match our 100 volt Japanese rice polisher voltage and it never fails.

The unit is a little bit large and the on/off switch is hard to press. It is used to feed 100 volts to a stereo tube amp. It worked fine.