Audio transformer ring transformer
Ring cattle transformer，ring transformer factory, customed the ring transformer
Description
Hi-Fi audio transformer is a ring type transformer below 50VA, suitable for volume limited environments and comprehensively replacing R-type transformers; Applied to DAC decoders, preamplifier stages, ear amplifiers, etc;
Product feature
GDM series: selected high-quality iron core precision annealing, targeted design;
Special noise prevention treatment process
Effectively reducing the electromagnetic noise generated by the transformer during operation;
Adding electrostatic shielding between the first stages reduces electromagnetic interference by more than 20% compared to conventional transformers;
Holds authoritative certifications such as UL, CE, RoHS, CESI, and ISO9001 quality systems.
| Product power: 15W | Output voltage: 2 * 12V |
| Product model:GDM-15 | External dimensions: Φ≤ 67mm, H ≤ 39mm |
| Input voltage: 220V | Installation method: 55 * 55 |
| Field of use: using DAC decoder, earbuds, etc | |
Product used field
 Installation effect |
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List of audio transformer models (some examples)
| Power |
dimensions H ×Φ (mm) |
Installation dimensions（mm) |
| 12VA | 37×63 | 55×55 |
| 15VA | 39×67 | 55×55 |
| 20VA | 40×70 | 60×60 |
| 25VA | 40×76 | 60×60 |
| 30VA | 40×77 | 60×60 |
| 40VA | 41×88 | 70×70 |
| 50VA | 46×90 | 70×70 |
GDM series audio transformer performance indicators (some examples)
| Model | power (VA) | primary DC copper resistance(Ω ± 20%) |
no-load current (≤ mA) |
no-load loss (≤ W) |
Electrical strength between primary and secondary phases(KV) |
adjustment rate (≤%) |
Insulation level | Full load temperature rise(≤ ℃) | Efficiency （≥%） |
| GDM-50 | 50 | 35 | 15 | 1.5 | 3.5/60S | 10.5 | B | 35 | 88 |
Comments after customer usage
As many netizens have said, there is a sound of electric current. After disassembling the speaker, it was discovered that the transformer inside was cut corners. If the power was on for a long time, the heat would be severe, and a powerful small ring cow was decisively installed on the treasure. Since the replacement, there has been no sound of electric current, and Goldstone's strength is so better good. and the parts processed by others are really not commendable. I recommend it to friends who have already bought this speaker, and replace it with a built-in transformer. It is really a good product.
Packaging
Certification
Factory Display
Gold Stone exports itself to over 20 countries and regions, and has established a long-term, stable, and in-depth strategic partnership with DIEMEN EFITER in Europe, achieving deep cooperation in brand, technology, certification, and market.
Our factory always focuses on meeting personalized needs, with pre-sales consultation, design, production, logistics, and after-sales service throughout the entire process. With nearly 20 domestic service outlets, we provide thoughtful services to over 8000 users.
So if |you have any support
Welcome all the customer to inquiry and contact us :sales@gsmagnetics.com helen.liu@gsmagnatics.com
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