custom toroidal power transformer
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500VA–5000VA Single Phase Step Up and Down Voltage Converter 110v to 220v
500VA–5000VA Single Phase Step Up and Down Voltage Converter 110v to 220v
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High-Quality Single Phase Adjustable Variac 0.5kVA-50KVA From China Mingch
High-Quality Single Phase Adjustable Variac Transformer 0.5kVA-50KVA

Customized Quality Variable Audio Amplifier Power Toroidal Transformer

The Customized Quality Variable Audio Amplifier Power Toroidal Transformer from ZHENGXI is designed to deliver exceptional audio fidelity and electrical isolation for professional audio systems. As a trusted toroidal transformer supplier, ZHENGXI specializes in manufacturing custom audio transformers that ensure minimal distortion, ultra-low noise, and perfect impedance matching — ideal for high-end amplifiers, recording equipment, broadcasting systems, and studio-grade sound engineering.

Unlike conventional EI-core transformers, toroidal transformers feature a circular core design that provides superior efficiency, low electromagnetic interference (EMI), and excellent frequency response across the 20Hz to 20kHz audio spectrum.

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Description

Key Features & Advantages

🎧 High-Fidelity Audio Performance

  • Ensures accurate signal transmission with minimal harmonic distortion.

  • Provides superior low-frequency response and wide dynamic range for clear, natural sound reproduction.

⚡ Excellent Electrical Isolation

  • Primary and secondary windings are magnetically coupled but electrically isolated.

  • Eliminates ground loop noise, hums, and interference between connected devices.

🔄 Perfect Impedance Matching

  • Optimized turns ratio ensures smooth signal transfer between components with different input/output impedances.

  • Enhances power transmission efficiency while maintaining signal integrity.

🧲 Premium Core Materials

  • Made with high-grade silicon steel, nickel-iron alloy, or nanocrystalline core for high magnetic permeability and low loss.

  • Offers stable performance even under long working hours or high loads.

🔇 Ultra-Low Noise Design

  • Toroidal structure minimizes stray magnetic flux, significantly reducing audible noise and vibration.

  • Ideal for audiophile-grade amplifiers, mixing consoles, and broadcasting equipment.

⚙️ Customizable Design

  • Available in custom voltage, current, power ratings, and winding configurations.

  • Optional shielding (copper foil or magnetic shell) for enhanced noise suppression in sensitive audio environments.

Descrioption Toroidal transformel Rated current 83A
Power 100OVA Electric strengt Voltage with stand 2500V
Frequency 50Hz/60Hz Input wire L:Blue N:Red
Input voltage AC220V Output wire L:Green N:Yellow
Output voltag AC12V Weight 7.05KgS
Power VA Dimension mm Weight
Height Diameter Kgs
50-100
150 55 107 4.1
200 57 108 4.9
250 67 107 5.6
300 60 125 6.2
350 63 127 6.7
400 65 129 7.1
450 66 130 7.3
500 68 134 8.5
550 70 134 9.1
600 72 136 9.3
650 75 137 9.5
700 76 138 9.7
800 77 140 11.5
900 73 143 13.5
1K 75 145 14.1
1.5K 85 182 21
2K 90 185 22.5

Working Principle

An audio toroidal transformer operates on the principle of electromagnetic induction.

  • The input audio signal induces a magnetic field in the primary winding.
  • This field transfers energy through the toroidal core to the secondary winding.
  • The induced current in the secondary winding recreates the audio signal for output, maintaining full electrical isolation.

This process allows the transformer to:

  • Isolate circuits and eliminate interference
  • Match impedance between devices
  • Convert voltage levels as needed
  • Preserve the audio signal with clarity and accuracy

Applications

  • Audio Amplifiers & Power Amps – for output stage coupling and impedance matching
  • Recording Studios & Broadcasting Systems – for clean, isolated signal transfer
  • Hi-Fi Audio Equipment – for superior sound purity and depth
  • Microphone Preamplifiers – for signal balancing and noise reduction
  • 100V Line PA Systems – for long-distance audio transmission with low loss
  • Tube Amplifiers (Valve Amps) – for voltage step-up or step-down and signature analog tone shaping

Why Choose ZHENGXI Toroidal Transformers

  • 20+ Years of Experience in transformer manufacturing and R&D

  • Global Supply Chain with exports to Europe, America, and Asia

  • Strict Quality Control under CE and ISO standards

  • OEM & ODM Customization for specific impedance, core material, and housing requirements

  • Technical Support Team with expertise in audio system design

FAQs

Q1: What makes a toroidal transformer better for audio use?
A: Toroidal transformers have a circular core that reduces magnetic leakage and improves efficiency, resulting in lower noise and better sound clarity.

Q2: Can I customize the voltage and power rating?
A: Yes, ZHENGXI offers fully customizable audio toroidal transformers based on your amplifier specifications and regional voltage requirements.

Q3: What’s the typical frequency range supported?
A: Our transformers maintain flat response and low distortion across 20Hz to 20kHz, suitable for professional audio applications.

Q4: Do you offer shielding options?
A: Yes, optional electrostatic and magnetic shielding is available to enhance noise suppression in high-interference environments.

Conclusion

The ZHENGXI Customized Audio Toroidal Transformer represents the perfect balance between acoustic purity, electrical safety, and engineering excellence. Whether for professional recording, broadcasting, or high-end audio amplification, ZHENGXI provides reliable custom toroidal transformers tailored to your performance and system integration needs.

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