--- product_id: 170018491 title: "Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt" brand: "goldsource" price: "614.64 DT" currency: TND in_stock: false reviews_count: 5 url: https://www.desertcart.tn/products/170018491-goldsource-stu-750-step-up-down-voltage-transformer-converter-ac store_origin: TN region: Tunisia --- # 750W power capacity Step Up/Down voltage conversion 3-mode simultaneous output Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt **Brand:** goldsource **Price:** 614.64 DT **Availability:** ❌ Out of Stock ## Summary > 🌍 Power your global lifestyle with confidence and style! ## Quick Answers - **What is this?** Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt by goldsource - **How much does it cost?** 614.64 DT with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/170018491-goldsource-stu-750-step-up-down-voltage-transformer-converter-ac) ## Best For - goldsource enthusiasts ## Why This Product - Trusted goldsource brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Certified & Covered:** CE certified with a 3-year limited warrantyβ€”because your tech deserves trusted backup. - β€’ **Safety First, Always:** All-range fuse protection with two spare fuses included for peace of mind during heavy use. - β€’ **Power Through Any Plug:** 750 watts of reliable power to handle your essential devices without a hiccup. - β€’ **Triple Output Convenience:** Simultaneous 5V USB, 120V US outlet, and 220V universal outlet keep all your gadgets charged and ready. - β€’ **Global Voltage Flexibility:** Seamlessly converts 110-120V to 220-240V and vice versa, perfect for international pros on the move. ## Overview The Goldsource STU-750 is a robust 750-watt step up/down voltage transformer designed for seamless international voltage conversion. It supports four input voltages (110V/120V/220V/240V) and offers simultaneous 3-mode output (5V USB, 120V US outlet, 220V universal outlet). Equipped with all-range fuse protection and backed by CE certification plus a 3-year warranty, it’s the essential power solution for professionals navigating global tech demands. ## Description 1111111111111111 Review: Why I needed a transformer... because I was stupid enough to buy a Tommee Tippee electric steam steriliser from an ebay seller from UK -- that's how they spell their sterilizer btw. I didn't think about the fact that the plug *might* be different or that the voltage needed would be more than standard US voltage. I blame the brain fart on my pregnancy. I had a universal plug adaptor, but I was scared that the sterIlizer wont sterilize my items at all due to the lower voltage. So I bought this handy dandy transformer... which I wouldn't have needed to buy if I just bought a US version of this thing. *grumble*mutter*mutter* I was so scared to turn mine on when it arrived due to other reviews stating that theirs smoked up and smelled or made weird noises. So I followed the instructions.. behind the transformer is a small little plug like thingy (like a key kinda or pin) and you basically place it on whatever hole you needed as voltage. I placed it on the two holes that was for 110, plugged it in my outlet, then plugged my sterilizer on the transformer outlet that says 220 output (the larger outlet on the right) then I wore my rubber gloves (yes, I even turned mine on wearing rubber gloves), flipped the red switch and VOILA!! ITS ALIVE!!! Bwahahaha! My transformer was very quiet.. Didn't even hear a hum.. I even placed my hand on top of the thing (after making sure I won't get electrocuted) and I didn't even feel any slight vibration. I do think that the burning and smoking and loud noises might be due to other people buying a lower wattage transformer that couldn't handle the item's required wattage to perform. I was about to buy the cheapest transformer (same brand) until I read about the wattage thing. I admit it floored me... I didn't know what it was talking about. I didn't even know about voltage, people and now I have to learn wattage too?? Anyway, Just look either behind or below your equipment and it should tell you how much watts your equipment needs. Mine was 650 by the way.. According to the details on this thing, you have to multiple your wattage needed by 1.5 and that's the transformer you should buy. Well if I went with that, then I have to shell out more money to get the 1000 watts transformer instead *grumble* I should have really just freaking bought the US version *grumble*mutter* and as I said, it worked well with the 750 watts.. I don't think I'll be using it for other appliances at my place anyway but if you plan on double plugging this thing with different appliances then just add up the watts needed. Oh yea, it also comes with another plug thing and a small ziplock that contains two small cylindrical light bulb looking things. You might miss the small ziplock if you're opening the box. I dunno what the bulbs are for. ONLY CON: Short Cord. What's up with that? Review: Work and good quality ## Features - Step Up/Down transformer converts 220-240 volts down to 110-120 Volts or 110-120 volts up to 220-240 volts. - Simultaneous 3-mode Output: 5V (USB) / 120V (Standard US outlet) / 220V (Universal outlet) - Four input voltages selectable: 110V/120V/220V/240V - All range fuse protection with two spare fuses included. - CE certified & 3-year manufacturer's limited warranty. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0022TL1BE | | Batteries Required? | No | | Batteries included? | No | | Customer Reviews | 4.3 4.3 out of 5 stars (269) | | Date First Available | 22 Sept. 2014 | | Included components | 1 | | Item Package Quantity | 1 | | Item Weight | 4.1 kg | | Item model number | STU-750 | | Manufacturer | ALLESM | | Part number | GK134783 | | Product Dimensions | 17.78 x 12.7 x 17.78 cm; 4.1 kg | | Wattage | 750 watts | ## Product Details - **Brand:** Goldsource - **Item weight:** 4.1 Kilograms - **Power source:** Corded Electric - **Specification met:** CE - **UPC:** 615564715217 ## Images ![Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt - Image 1](https://m.media-amazon.com/images/I/51niLzJT5rL.jpg) ![Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt - Image 2](https://m.media-amazon.com/images/I/41xJzcUbgyL.jpg) ![Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt - Image 3](https://m.media-amazon.com/images/I/51WB8AO0j1L.jpg) ![Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt - Image 4](https://m.media-amazon.com/images/I/61FhswaK9ZL.jpg) ![Goldsource STU-750 Step Up/Down Voltage Transformer Converter - AC 110/220 V - 750 Watt - Image 5](https://m.media-amazon.com/images/I/71mEQhKPVkL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by I***E on 31 October 2012* Why I needed a transformer... because I was stupid enough to buy a Tommee Tippee electric steam steriliser from an ebay seller from UK -- that's how they spell their sterilizer btw. I didn't think about the fact that the plug *might* be different or that the voltage needed would be more than standard US voltage. I blame the brain fart on my pregnancy. I had a universal plug adaptor, but I was scared that the sterIlizer wont sterilize my items at all due to the lower voltage. So I bought this handy dandy transformer... which I wouldn't have needed to buy if I just bought a US version of this thing. *grumble*mutter*mutter* I was so scared to turn mine on when it arrived due to other reviews stating that theirs smoked up and smelled or made weird noises. So I followed the instructions.. behind the transformer is a small little plug like thingy (like a key kinda or pin) and you basically place it on whatever hole you needed as voltage. I placed it on the two holes that was for 110, plugged it in my outlet, then plugged my sterilizer on the transformer outlet that says 220 output (the larger outlet on the right) then I wore my rubber gloves (yes, I even turned mine on wearing rubber gloves), flipped the red switch and VOILA!! ITS ALIVE!!! Bwahahaha! My transformer was very quiet.. Didn't even hear a hum.. I even placed my hand on top of the thing (after making sure I won't get electrocuted) and I didn't even feel any slight vibration. I do think that the burning and smoking and loud noises might be due to other people buying a lower wattage transformer that couldn't handle the item's required wattage to perform. I was about to buy the cheapest transformer (same brand) until I read about the wattage thing. I admit it floored me... I didn't know what it was talking about. I didn't even know about voltage, people and now I have to learn wattage too?? Anyway, Just look either behind or below your equipment and it should tell you how much watts your equipment needs. Mine was 650 by the way.. According to the details on this thing, you have to multiple your wattage needed by 1.5 and that's the transformer you should buy. Well if I went with that, then I have to shell out more money to get the 1000 watts transformer instead *grumble* I should have really just freaking bought the US version *grumble*mutter* and as I said, it worked well with the 750 watts.. I don't think I'll be using it for other appliances at my place anyway but if you plan on double plugging this thing with different appliances then just add up the watts needed. Oh yea, it also comes with another plug thing and a small ziplock that contains two small cylindrical light bulb looking things. You might miss the small ziplock if you're opening the box. I dunno what the bulbs are for. ONLY CON: Short Cord. What's up with that? ### ⭐⭐⭐⭐⭐ Review *by W***0 on 27 October 2025* Work and good quality ### ⭐⭐⭐⭐⭐ Review *by R***C on 9 September 2014* Just received this Gold Source 750 step up/down voltage transformer converter and it came in a very good package without any damages. I ordered this to use it with a 220 V Indian table-top wet grinder: Ultra Grind +. The transformer is small in size but little heavy. It is a nicely finished Chinese product and build quality appears good. Just like the other reviewers had said, has a little kerosene like paint smell to it that disappears after some time, when taken out of its box. It is very quiet with no noise or hum during operation and comes with a small instruction paper, two fuses and a plug adapter. So far so good, works fine with no issues. Don't know yet how long will the grinder last since it's designed to run on 220 V, 50Hz frequency whereas it's being made to run on 110 V, 60Hz. This transformer is perfect to convert and run the 220 V Indian Grinders & Mixies on 110 V here in the US. The best bet though is to always bring in or buy the 110 V, 60Hz version of the Indian kitchen appliances rather than use it with a voltage step up/down transformer converter. --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/170018491-goldsource-stu-750-step-up-down-voltage-transformer-converter-ac](https://www.desertcart.tn/products/170018491-goldsource-stu-750-step-up-down-voltage-transformer-converter-ac) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-05-07*