K KRIËGER 350 Watt Voltage Transformer, 110/120V to 220/240V Step Up Step Down Converter with AC Outlets, MET Approved Under UL, CSA

I purchased this KRIËGER 350 W Voltage Transformer for use with a Singer sewing machine with EU 220V input in the US, and it has fulfilled my expectations. The build feels solid and well-made, converting between 110V and 220V without any issues. Setup was straightforward, and the unit feels reliable and safe. Great value for the price.

Bought this ULT350 to power a 170w receiver I bought in the EU. Only had it for a day but I've had it powering the receiver for hours without any issues. Runs quiet, and the case has stayed cool. Hopeful that it'll run this way for a while. When you're buying just remember you should buy a unit that's at least 50% over the wattage of whatever you're going to power.

The Krieger 350 Watt Voltage Transformer was packaged quite well. It arrived on time and undamaged. Excellent finish. It solved my problem quite well. I had bought AT&T phones that unfortunately only accepted 120 Vac. My application is for our vacation house in France, so we needed 230 Vac in and 120 Vac out. It was easy to install and is quiet. Please beware that this product does not use a full isolation transformer, nor does it convert frequency. I just bought another one for the charger for my impact wrench.

I bought a guitar amp from Europe 230vac and need to run on 120vac and brought it to the states and needed a step up transformer. was also concerned about the 50 hrtz to 60 hrtz and what noise may be generated threw the amp from the transformer to amplifier and there was nothing! Thought it might also run warm and not at all, you'd hardly know this thing was even on good quality right out of the box and easy to use. Just flip the input voltage and your good to go

[Edit - rewritten after I used it for a few months] Used it, works fine, powered several old Russian analog audio effects devices and a vintage Roland guitar synthesizer with euro 220 volt power supplies off of it (with a euro style power strip I bought off Amazon of course) It is very well constructed, better than any other step up down transformer I’ve owned before. And it is UL listed (Or at least said so in the listing on Amazon) which is also unlike most others I’ve seen, and it was relatively inexpensive which are why I bought this model.

I'm using this product to power a 70's cassette deck that was made in the US (I live in a 230V region) the transformer works great for this use, and my cassette deck work flawlessly through it. (Note that the motor in my cassette deck is a DC motor, your results may vary if you use an AC motor cassette deck.) I'll also note that I like the industrial design, it looks very professional and I don't feel I need to hide it behind something. In conclusion, this product works great and I highly recommend it.

The construction quality was good and the transformer functioned perfectly for my use - a very low wattage device used continuously. The transformer is silent and barely gets warm. You need to apply significant pressure to plug in the cords - at first I thought the fit was wrong but then it occurred to me that maybe the fit was intentionally tight so that the cords won't pull out accidentally.

This universal voltage transformer can be used as a step down (230->115v) or step up (115->230v) voltage converter. The core of this device is a good old toroidal transformer (pretty heavy) with switchable coils, allowing to configure its transformation ratio. This converter doesn't induce any high frequency noise into the feeding line like other compact switching power supplies do, which is good for feeding audio equipment. Transformer runs silently (no buzzing at all) and cool and equipped with two fuses for safety on power overload or short circuits.

Works well with no noise I could detect. Proper unit without overheating issues other cheaper units are known for.

Me gustó que la calidad del equipo es excelente trabaja perfectamente, lo compre para un equipo de cocina de 220v y lo alimente con la línea de 127v trabaja perfectamente

Extraordinario transformador. Sólido y muy buen construido. El flujo de corriente es perfecto y no tiene ningún sobrecalentamiento incluso después de utilizarlo varias horas. Lo compré para utilizar con un instrumento musical con corriente americana (110V) y tenía preocupación de que pudiera sobrecalentarse tras un uso prolongado. Nada de eso. Funciona perfectamente y es muy seguro. Además, no produce ningún tipo de ruido o soplido.

👍

Ottimo