--- product_id: 227740909 title: "Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty]" brand: "goldsource" price: "€ 296.73" currency: EUR in_stock: false reviews_count: 9 url: https://www.desertcart.sk/products/227740909-goldsource-3000w-st-pro-auto-step-up-and-step-down store_origin: SK region: Slovakia --- # 3000W max load DC 5V USB port Universal AC outlets Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] **Brand:** goldsource **Price:** € 296.73 **Availability:** ❌ Out of Stock ## Summary > Transform Your Power Game! ⚡ ## Quick Answers - **What is this?** Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] by goldsource - **How much does it cost?** € 296.73 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/227740909-goldsource-3000w-st-pro-auto-step-up-and-step-down) ## 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 - • **🚀 Easy Operation:** Built-in soft-start circuit prevents inrush current, ensuring smooth startup. - • **💡 High Efficiency:** Achieves 90%-95% efficiency with a lightweight, portable toroidal transformer. - • **🔧 Upgraded Design:** Enhanced US socket & universal compatibility for all your devices. - • **🏠 Ideal for Home Use:** Perfect for high-demand appliances like rice cookers, mixers, and more. - • **🌍 Versatile Voltage Selection:** Choose from 4 input voltages: 110V, 200V, 220V, 240V. ## Overview The Goldsource 3000W ST Pro+ Voltage Transformer is an upgraded, heavy-duty converter designed for seamless voltage conversion between 110V and 220V. With universal AC outlets, a DC 5V USB port, and a robust 3000-watt capacity, it’s perfect for powering a variety of household appliances efficiently and safely. ## Description desertcart.com: Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] : Electronics Review: Works as advertised. - Product arrived quick. I've used the step up transformer for about 3 hours and it definitely works as advertised. Good simple instructions come with the unit. I don't have a way to test it for how many watts it puts out at this time. Would definitely recommend to this point. Review: Works great - Needed a step-up/down converter for a ps5 I bought in the UK (back in US now) this one was highly rated and it works like a charm. Great value, definitely be sure to give yourself wiggle room with wattage, went with 1000w but will never even come close to half that, I heard it helps with longevity though. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B08DG6Y9F9 | | Best Sellers Rank | #792,014 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #3,685 in Power Converters | | Customer Reviews | 4.1 4.1 out of 5 stars (83) | | Date First Available | January 24, 2019 | | Is Discontinued By Manufacturer | No | | Item Weight | 17.82 pounds | | Item model number | ST Pro+ | | Manufacturer | Goldsource | | Product Dimensions | 13 x 9 x 8 inches | ## Product Details - **Brand:** Goldsource - **Current Rating:** 3 Amps - **Mounting Type:** Surface Mount - **Power Source:** Corded Electric - **Specification Met:** FCC, UL ## Images ![Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] - Image 1](https://m.media-amazon.com/images/I/311lkATHV9L.jpg) ![Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] - Image 2](https://m.media-amazon.com/images/I/41Ckh3KVqSL.jpg) ![Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] - Image 3](https://m.media-amazon.com/images/I/41wBbd5-MNL.jpg) ![Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] - Image 4](https://m.media-amazon.com/images/I/51FGrAe9qAL.jpg) ![Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] - Image 5](https://m.media-amazon.com/images/I/51cX-hrJcVL.jpg) ## Questions & Answers **Q: Will this unit convert a single phase 240v generator output (center tap ground) to 120v?** A: Yes **Q: Will it be safe for a 120v. 550w appliance ?** A: The 1000W transformer is likely fine, but note that some devices (like laser printers) draw a lot of power when they first start up (sometimes 2 or 3 times listed power draw( and you need to allow for that. **Q: where can I purchase fuses for the transformer?** A: Very giid **Q: will this work on 1750w air fryer?** A: It should be work. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Works as advertised. *by M***S on September 19, 2025* Product arrived quick. I've used the step up transformer for about 3 hours and it definitely works as advertised. Good simple instructions come with the unit. I don't have a way to test it for how many watts it puts out at this time. Would definitely recommend to this point. ### ⭐⭐⭐⭐⭐ Works great *by C***R on July 6, 2024* Needed a step-up/down converter for a ps5 I bought in the UK (back in US now) this one was highly rated and it works like a charm. Great value, definitely be sure to give yourself wiggle room with wattage, went with 1000w but will never even come close to half that, I heard it helps with longevity though. ### ⭐⭐⭐⭐⭐ Works like a charm *by B***K on November 7, 2020* Bought it for my appliance from China, Worked like a charm. Very well designed and made, plug feels solid, no odd smell or noise. Highly recommended. ## Frequently Bought Together - Goldsource 3000W ST Pro+ Auto Step Up & Step Down Voltage Transformer Converter, Upgraded Heavy-Duty AC 110/220V Converter with US Standard, Universal AC Outlets & DC 5V USB Port [3-Year Warranty] - Yinleader 1500W Step Up & Step Down Voltage Transformer Converter 110V to 220V or 220V/230V/240V to 110V/120V Power Converter w/US Power Cord,Circuit Breaker Protection --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/227740909-goldsource-3000w-st-pro-auto-step-up-and-step-down](https://www.desertcart.sk/products/227740909-goldsource-3000w-st-pro-auto-step-up-and-step-down) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-04-24*