PowerBright 300 Watts Japanese Voltage Transformers, Step Up and Down Japan Converter, can be Used in 120 Volt and 100V Countries, Convert from 120V to 100V and 100V to 120V, Universal Outlet Socket

VC-300J - This is the 300w unit. It is smaller than I expected it to be, which is great, and is very heavy. Looks like it’s made from quality aluminum cover and it feels very sturdy. It worked as expected (I’m using it for a turntable) and is super quiet (no 60hz hum). Came with simple and clear instructions in proper English.

Purchased this to run Japanese voltage electronics. Works perfectly. Build quality is excellent. I leave the switch on the back on all the time and the unit does not generate excess heat. The only thing is that I did not get the extra fuses pictured on the purchase page - they could be inside the unit. Would purchase again.

Haven't had it long enough to evaluate quality as a whole, but it is doing the job I needed: powering a stereo imported from Japan that requires 100V. The only complaint so far is the "universal outlets" - they are not easy to get a 2-prong plug into. The vertical prongs want to go into the sideways "clamps" that appear designed for the sideways prongs I've seen on some plugs. You have to kind of spread them apart to get the prongs in between them. This may be intentional to put adequate pressure on the plug, but it makes it a bit of a hassle to plug something in.

An inexpensive transformer to step power down to run Japanese (or other country) devices that need 100 Volts AC instead of 120 Volts (USA). HOWEVER: The case material is very VERY thin, and the transformer is very heavy, so it's almost certain yours will arrive all bent up, which makes it dangerous to use. If that's the case, then DO NOT PLUG IT IN! Just return it and get a refund, because the next one will probably come bent up also. Now, I've been working with electronics and electricity for many years, and I accept responsibility for my own actions and accept all risk for taking things apart, and I know the warranty on mine expired as soon as I took my tools to it. So, I fixed mine. Without advising anyone to do what I did, I'll tell you what I did so I could keep this instead of returning it. First, I took the cabinet apart, and loosened the transformer from the base. I straightened up all the bent sheet metal that had the transformer bent and at risk of shorting out the power lines. Then, I cut out the old two prong cord, because this unit comes with three prong outlets that are supposed to be grounded. So, I installed a three prong power cord and made sure the green wire was tied to ground, the blue wire was tied to the neutral side of the outlet, and the BROWN wire was tied to the hot side. I tested all this with a DMM. In the course of doing this, I found a bad solder joint (a wire just popped off on its own), and fixed that, and I put shrink tubing on all connections to provide additional protection. If you don't understand any of the electrical terms I used above, and don't know the difference between "hot", "neutral", and "ground" (or "earth"), then just return yours. Try your luck at not getting one that's bent up, or just ask for your money back. Funny thing: Right after I got this, I found, at the swap meet, a very old, vintage step down transformer from the 1950s or '60s, which does the same thing, so I didn't really need this after all! Well, now I guess I have one to give away in case I sell something in the USA that was meant for Japanese 100 Volt power.

Seems like an excellent transformer. This thing has some heft it's is a brick. As others have mentioned quality transformer with suspect and substandard assembly. Smashed insulation, black wire in picture, and exposed cold solder joint. Working correctly however after a quick observation it probably should have a good once over before it's left unattended.

We bought this solely for using our kotatsu in America, and there's been no issues at all. I guess it could have been packaged better, but at least for us, nothing broken, nothing bent, no fires, sparks.......exactly what you'd expect. Been using for a month and would highly recommend especially for the price and convenience of Amazon shipping!

First one arrived completely dented up. Second one arrived with some minor dents, was going to just deal with it, but any plugs I connect sit loose and canted. Spend the extra money and get something decent, your devices will be better off anyways.

After about 2 months of using this for my Technics SL-1300 from Japan I haven't had any issues. No dips in power, smell, nothing.

Perfect for my Japanese PlayStation 2!

Works as described

Opened the box and the fuse inside was blown. No backup fuses supplied. No instructions. Looks like cheap Chinese quality. Dead on arrival.

ITS OK

Great price and does exactly what I need it to do