2000 Watt Voltage Converter Transformer - Heavy Duty Step Up/Down AC 110V/120V/220V/240V Power Converter - Circuit Breaker Protection – DC 5V USB Port

Works good in Semi trucks

I bought this step-up transformer just about a year ago to power a variety of household electronics that I brought from Europe, including a fan. All of these devices require a 220V input, and initially, the transformer worked as expected, stepping up the voltage quietly and reliably. However, five days short of its one-year anniversary, the transformer started to make an uncomfortably loud humming noise. This is not just a minor inconvenience, as the noise is so intrusive that it overpowers even the sound of the fan in operation. This issue has become a significant concern for me as I use the transformer not just for the fan, but for multiple appliances. Each time I need to use any of these appliances, I'm faced with a dilemma: tolerate the excessive noise or do without my much-needed devices. The noise from the transformer has unfortunately transformed (no pun intended) my quiet home into a space filled with an overwhelming, continuous hum. It is quite disappointing, given that the transformer was initially a perfect solution for my European devices. In conclusion, while the transformer remains functional in terms of voltage conversion, the noise issue significantly detracts from its usability. I would urge potential buyers to consider this factor before making a purchase. If you're looking for a quiet solution for powering European appliances, this might not be the product for you.

Updated: Pros: Works as advertised, no ground loops on audio sensitive equipment, works with 50Hz devices just fine, 500W version is virtually silent. Cons: Produces a bit of heat (no more than expected, however), 2,000W version produces and audible hum in quiet environments. I now own two of these devices (a 500W and a 2,000W). I purchased the 500 Watt transformer to run a set of high-end Yamaha HS80m studio speaker monitors (which I purchased in Australia) in the USA after moving. The speakers required 160 Watts in total with 220v @ 50Hz, so I used this unit to step-up the voltage from the 110v US wall outlet. I was extremely impressed that there was no ground loop or hum present when using the speakers (studio quality monitors are VERY sensitive to interference and "ground loops" so noise and hum coming through the speakers is often a big concern for audiophiles). I had to use a ground loop isolator when running these back in Australia, but I don't use it any more because the transformer does a good enough job on its own of providing balanced power, thus avoiding the hum and crackle in the speakers. Also, despite my devices being 50Hz, they work just fine with no issues. I use the 2,000 Watt version to power my Sony 7.2 speaker Home Theater System (which required about 360 Watts, but also would be prone to boot-up spikes so I went with 2,000w instead of 1,000w to be safe). My only gripe with the 2,000 Watt unit is the subtle hum it gives on when running. It is not really noticeable unless the environment is quiet, but can be a bit distracting for me after all my devices are turned off. both units also produce a bit of heat (primarily from underneath the unit). This heat, however, is no more than expected, but for people wanting to use these on carpet I recommend buying a small ceramic tile from your local home improvement store (around $1 each) to sit this device on top to help dissipate the heat and to give you extra peace of mind.

Muy bueno

work as described. nothing special, just a converter. original product was lost in transit (per store explanation). the replacement came a day later than expected. It able to provide enough power to run the machine purchased in Asia.