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Deliver crystal‑clear, low‑noise power to your tube amplifiers while cutting total cost by up to 30%.
Get Free Quote in 24 h1. Excessive price tags. 62% of purchasing managers report that transformer costs exceed budget by >15%.
2. Unreliable quality. Low‑wattage spikes and core saturation cause audible hum and premature tube failure.
3. Long lead times. Traditional suppliers in Europe and the US average 8‑12 weeks, delaying product launches.
4. Limited customization. Off‑the‑shelf units rarely match your specific voltage‑current curves, forcing costly redesigns.
5. Compliance headaches. Missing CE, FCC, or RoHS certifications stalls customs clearance.
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Primary Voltage | 120‑240 | V RMS | Universal input |
| Secondary Voltage | 250‑500 | V RMS | Adjustable via tap |
| Power Rating | 50‑300 | W | Customizable |
| Efficiency | ≥96 | % | Measured at full load |
| Noise (THD) | ≤0.9 | % | Audio‑grade core |
| Operating Temp. | ‑40 ~ +85 | °C | Industrial range |
| Dimensions | 120×120×60 | mm | Compact footprint |
Explore real‑world applications →
toroidal-amp toroidal-amplifier Toroidal-Transformer bi-toroid-transformer
“Xinchangda’s toroidal transformers cut our prototype cycle from 10 weeks to 3 weeks, and the noise level is unmatched.” – John Miller, CTO, AudioCraft USA
“ISO 9001 and CE certifications saved us weeks of paperwork at EU customs.” – Linda Chen, Procurement Manager, MedTech Solutions
Certificates: CE, FCC, RoHS, VDE, ISO 9001, UL, CB.
Standard production is 4 weeks; with express scheduling we can ship in 2 weeks. All shipping documents comply with US import regulations.
Yes. Our R&D team can design up to 30 different tap points per unit, with prototype validation within 5 days.
All models are FCC Part 15 Class B compliant; test reports are provided on request.

30 % T/T deposit, 70 % balance before shipment. For verified accounts, we also accept L/C or PayPal Business.
Yes. Our 24/7 support line (+86 131 2825 6415) and dedicated account engineer provide troubleshooting, firmware updates, and warranty service for 12 months.
Limited‑time offer: **Free engineering sample** (up to 5 W) for orders placed before May 31 2026. No risk, no obligation.
Request Free SampleOr call us now: +86 131 2825 6415 (WhatsApp available) | Online Inquiry Form
Mark T., Senior Purchasing Manager – Amplify Sound Inc. (USA)
“The toroidal transformer’s low‑noise performance reduced our amp’s hum by 0.4 dB. Delivery was on schedule, and the price was 22 % lower than the German competitor.”
Sara L., Operations Lead – MedTech Solutions (Canada)
“We needed a CE‑certified transformer for a portable ultrasound unit. Xinchangda delivered a fully tested batch within 3 weeks, saving us a product launch delay.”
David K., CTO – SolarEdge Europe
“High‑efficiency toroidal units improved our inverter’s overall efficiency by 1.2 %, translating into a $45 k annual energy saving.”
Alex Li, Ph.D. – Senior Magnetic‑Component Engineer, Huizhou Xinchangda Electronic
With 12 years of R&D experience in high‑frequency magnetic design, Alex has authored 5 IEEE papers on toroidal core optimization and led more than 200 OEM projects for audio and medical markets.
Contact: grace01@xcdmagnetic.com | Phone: +86 131 2825 6415
Huizhou Xinchangda Electronic – 14th Floor, Building A, Pushengwang Industrial Park, Sanhe Street, Huiyang District, Huizhou City, Guangdong Province, China
Tel: +86 131 2825 6415 | Email: grace01@xcdmagnetic.com | Contact Page
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