custom toroidal power transformer
Click to enlarge
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
Back to products
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.

Compare
Add to wishlist
分类： , ,
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.

Shipping & Delivery

Related products

500VA–5000VA Single Phase Step Up and Down Voltage Converter 110v to 220v
Compare

500VA–5000VA Single Phase Step Up and Down Voltage Converter 110v to 220v

,
The ZHENGXI 500VA–5000VA Single Phase Step Up and Down Voltage Converter is perfect for small industrial devices, office electronics, and home appliances used in various locations since it can securely and effectively convert voltages between 110V–120V and 220V–240V. High efficiency, low heat generation, and low noise are features of the SDT series, which is constructed with a toroidal copper-core transformer. This device provides steady, clean power to safeguard your priceless equipment, whether you're stepping down from 220V to 110V or up from 110V to 220V.
Add to wishlist
Quick view
Single Phase Toroidal Isolation Transformer 220v To 220v With 2 Output Sockets
Compare

Single Phase Toroidal Isolation Transformer 220v To 220v With 2 Output Sockets

, ,
This 220V to 220V single-phase toroidal isolation transformer is made to supply delicate electronic and audio devices with clean, steady, and noiseless power. It efficiently isolates electrical noise and interference using high-efficiency toroidal core technology, guaranteeing connected devices operate at their best and are safe. With two outputs and a smart HD LCD display, users can effortlessly keep an eye on operating condition, load, and voltage in real time. This isolation transformer provides clean power, low electromagnetic interference, and long-term reliability whether it is utilized in industrial control systems, medical equipment, audio systems, or labs.
Add to wishlist
Quick view
TC 100va-5Kva Portable Small Step Up And Down Voltage Converter 110v To 220v Transformer
Step Down Transformer 230V 50Hz to 110V 60Hz
Compare

TC 100va-5Kva Portable Small Step Up And Down Voltage Converter 110v To 220v Transformer

,

The TC Series Portable Step Up and Down Voltage Converter is designed for users who need to operate electrical appliances with different voltage standards. This reliable 110V to 220V transformer efficiently converts power between 110V–120V and 220V–240V, ensuring safe and stable performance for your devices anywhere in the world.

With its dual-core design, the 110 To 220 Transformer works both ways:

  • Converts 110V to 220V (step-up)
  • Converts 220V to 110V (step-down)

Simply select the correct input voltage for your region using the built-in voltage selector switch — available options: 110V / 220V / 230V / 240V. The corresponding output provides clean and stable AC power for your equipment.

Add to wishlist
Quick view
Single 220V to Three phase Voltage Converter
Phase Converter 1 Phase to 3 Phase 220V to 380V Pure Sine Wave Inverter
Compare

Single-Phase 220V To Three-Phase 380V Phase Converter

, ,
The DZW series is a compact, high-performance Single-Phase To Three-Phase transformer alternative — a smart Phase Converter that turns ordinary 220V single-phase mains into reliable three-phase 380V power. Using advanced SVPWM (space-vector PWM) modulation together with rectification, frequency conversion, inversion and voltage boosting, the unit delivers a true three-phase sine wave with harmonic distortion below 2% and excellent transient response.
Add to wishlist
Quick view
Sg-8kVA 8000va 415V 400V 380V Three Phase Dry Type Isolation Control Transformer
High-Efficiency Three Phase 4000va Dry Type Control Transformer
Compare

High-Efficiency 500va-1000Kva Three Phase Dry Type Control Transformer 415V 400V 380V

, , ,
The SBK Series three-phase dry-type control transformer (500VA–1kVA) delivers compact, reliable voltage conversion for industrial control, automation and machinery applications. Available with configurable primary and secondary voltages (standard: 380V / 400V / 415V) and rated for 50Hz or 60Hz systems, this transformer is designed for low-voltage networks (<1kV). Its dry, air-cooled construction eliminates oil, reduces fire risk and lowers routine maintenance — making it a safe, cost-effective choice for motor control centers, CNC systems, PLC cabinets and distribution panels.
Add to wishlist
Quick view
220v to 220v isolation transformer For audio equipment
Single Phase Isolation Transformer 220v To 220v Safety Isolation Power Supply AC Ring Isolation Transformer Power Converter
Compare

GBK2 Single Phase 220v To 220v Toroidal Balanced Isolation Transformer 300va-2Kva

, ,
Ensure pristine power quality and maximum safety for sensitive loads with the GBK2 toroidal isolation transformer. Designed for applications that demand low noise, low leakage and stable output (220V → 220V), the GBK2 series isolates your equipment from mains disturbances, suppresses transients and reduces common-mode interference. Its compact toroidal core delivers higher efficiency and lower audible hum than conventional laminated transformers—ideal for medical devices, pro audio, laboratory instruments and industrial controls.
Add to wishlist
Quick view
Single Phase Dry Type Control Isolation Transformer Manufacturer
transformer 220v to 110v
Compare

JBK 25va-5000va Single Phase Dry Type Machine Control Isolation Transformer 220v to 110v

, , ,
The JBK series is a compact dry-type control transformer designed for machine control and isolation in industrial panels. Typical use is 220 V → 110 V control circuits for contactors, relays, PLCs and sensors. Built for low noise, high reliability and easy cabinet mounting, JBK protects control circuits from mains disturbances while simplifying wiring and maintenance.
Add to wishlist
Quick view
single phase control transformer
Bk100va-5kva Single Phase Isolation Control Power Transformer
Compare

Bk100va-5kva Single Phase Isolation Control Power Transformer

, , ,

The BK series single-phase isolation control power transformer (commonly called a BK transformer) delivers stable, isolated control voltages for industrial and commercial equipment. Available from 100 VA to 5 kVA, the unit uses a thyristor (SCR) control module with feedback to provide precise closed-loop voltage regulation even when the input supply fluctuates.

This control transformer is built to international safety and efficiency standards and is perfect for CNC machines, PLCs, automation panels, lighting circuits, and other precision systems that need a stable control supply.

Add to wishlist
Quick view