Review on Yinleader 800W Step Up & Step Down Voltage Transformer Power Converter - Convert 220V to 110V or 110V to 220V in Global Regions by Besim Kahsar

Fairly light for its rating. As with most of these products, there is a strong smell of shellac and other fumes when the box is opened. I ran this transformer at half rated power and after 12 hours of operation it was quite lukewarm, but that's not all that unusual. The green neon power indicator helps you know when it's plugged in, and the red power button itself is handy. I used this for a G style UK plug, for 120-240v operation. The plug fits snugly and snugly in the multiple socket however due to the low position of the socket and the style of the UK plug when that Cable exits connector at the bottom, the device does not sit flat and exactly on the surface. . This adds a bend at that point and puts more stress on the cable. If you have a device with a modern shaped G connector, I can see that this is quite problematic. I had to position it on the edge of a table so the UK G plug cord ran straight down. Either way it does what it's asked to do and if you must use any form of step-up or step-down transformer you should always buy 30% more power rating than you need - at the very least. I play carefully and usually never run them at 50% of their advertised power. I think modern (Chinese) step-up and step-down transformers exaggerate their power rating. Sure this thing is fine for 200W, but probably not for continuous use like this - they rely on the user's occasional regular use in short bursts to show their wattage I think. As long as you keep that in mind when making your purchase (buy twice the power rating of your target device), you'll be fine. There are other factors that come into play when using devices with different power systems, most notably the fact that your device expects 240V 50Hz. AC and this step-up transformer supplies 240V 60Hz AC (when operating on US grid power). That 10Hz frequency difference actually equates to 17% of the inefficiency of all the internal transformers in your device, which means that if your device claims to be using 240VAC at 100W, it's probably actually drawing 117W and is probably warmer than usual. Transformers are "tuned" to a specific line frequency, it's usually okay to run them "out of tune", they just get a little warm and are less efficient and draw more power. However, I think the price is reasonable for the performance. It does the job.