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1000W Toroidal Transformer for Audio Amplifier

1000VA Toroidal Power Transformer for Amplifier


Rated power	1000VA
Input	110V–240V AC
Output	24V AC or customized
Frequency	50/60Hz
Winding	Copper
Insulation	Class B or customized
Application	Audio/Amplifiers
Customization	Voltage, dimensions, wires, shielding

Overview
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SMALL SIZE Most toroids are smaller than their E-I transformer counterparts. Electrical and mechanical designers appreciate a toroid’s compact dimensions. They are particularly well suited where low height is a consideration.	LOW STRAY MAGNETIC FIELD Toroids have no airgaps: primaries and secondaries are wound uniformly around the entire core. As a result, toroids emit very low radiated magnetic fields. This makes the toroid ideal for applications involving high sensitivity circuitry.	HIGH EFFICIENCY Due to its unique construction, toroids are typically between 15 and 30% more efficient than the conventional type. As a rule; the larger the transformer, the more efficient it becomes.
LOW MECHANICAL HUM The core of a toroid is formed from a single strip of grainoriented electrical grade silicon steel tightly wound in the form of a clock spring with the ends spot-welded in place. The copper wire is wound over polyester film, forming a silent, stable unit without the use of environmentally unfriendly glues or varnishes.	FLEXIBLE DIMENSIONS Compounding the benefits of low weight and small size is the flexibility to vary dimensions. Because ECKO is not tied down to core caps or lamination sizes, the height and diameter of our toroids may be economically varied to accommodate equipment design requirements.	LOW WEIGHT Because they are more efficient, toroids can be up to 50% lighter, (depending on power rating), than conventional laminated transformer. Low weight simplifies end product design by reducing mounting hardware and supporting enclosure requirements.
LOW NO-LOAD LOSSES Compared to conventional E-I transformers, toroids exhibit extremely low no-load losses. In applications where a circuit is in a “stand-by” mode for long periods, the potential cost reduction for power can be significant, sometimes 80-90%.	LOW OPERATING TEMPERATURE Since most of the losses in a toroid are in the copperwire, the toroid cools off quicker than the conventional E-I type with more iron. At half the load, the toroid’s temperature rise is only about 30% of what it is at full load.	EASY TO MOUNT A single-center screw easily and quickly mounts the toroid, avoiding costly mechanical design and practical problems associated with conventional E-I-laminated transformers... and three screws are eliminated at assembly!

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Rated Power (VA)

Voltage Regulation (%)

Efficiency (%)

Dimension(mm)

Weight (Kg)

Height(C)

Diameter(A)

30

16

83

30

80

0.60

100

11

88

42

100

1.30

150

7.30

90

45

115

1.85

200

6.2

91

53

123

2.30

250

5.60

92

53

128

2.60

300

5.30

93

55

135

3.00

400

4.60

94

60

140

3.80

500

4.30

95

66

146

4.50

800

4.0

95

85

160

7.00

1000

3.80

96

90

165

8.50

1200

3.30

96

95

168

9.00

1500

3.0

96

100

173

9.50

2000

2.90

96

110

183

13.00

4000

2.2

97

135

245

23.00

5000

2.1

98

145

270

28.00

*The parameter is only for reference as typical data, customized are welcomed.
*We are able to provide you 20VA to 25KVA toroidal transformer.

QUALIT Y TO THE CORE

Electrostatic Shield (Customer Specified)
• Reduces capacitive coupling between primary and secondary windings.
• Copper foil (2 mil) laminated between polyester film and tape.
• Tightly wound over primary insulation.

Primary to Secondary Insulation
• Polyester film-Class B (130°C)
• Four layers minimum between windings
• Meets test requirement of 4000V RMS for 1 minute between primary and secondary.

Windings
• Base coat of Polyester. Heavy topcoat of amide imide (200°C)
• Wound uniformly over entire core
• Better heat dissipation
• Windings configured for minimum flux leakage
• Low voltage maintained between adjacent turns

Thermal Protection (Customer Specified)
• Usually in primary circuit
• Normally closed-auto reset opens at high temperature
• One-shot fuse also available

Core Insulation
• All cores: 100% surface coverage of four layers of 2 mil polyester film Class B (130°C)
• Protects, insulates and cushions the core from windings and reduces vibration

Core
• Cores are manufactured and annealed in-house, under controlled conditions
• Continuous tightly wound grain oriented silicon steel...no airgaps, no mechanical noise
• Lathed radial corners... compact design, most efficient use of materials
• No core caps necessary

Magnetic Shield (Customer Specified)
• Multiple layers of grain oriented silicon steel tightly wound around the toroid’s circumference
• Fixed in place by outer insulation

Outer Insulation
• Tape wound type: Standard two layers polyester film Class B (130°C)
• Magnetic enclosures optional

Center Hole Potting (Customer Specified)
• Thermoplastic material
• High mounting precision
• Threaded insert or press fitted stud is optional
• Thermally conductive compound available

Wire Leads
• Choice of two types of leads connected to windings:
*Self leads: The magnet wire is extended through sleeving for connection to circuit. Standard: Class A (105°C)
*Stranded wire leads: Class A (105°C) - Class H (180°C)
• Each lead anchored to toroid body with high tensile strength tape to withstand severe pull test

• Primary leads covered with second layer of sleeving - double insulation... standard on
all units
• Color, length, stripping and terminations can be customer specified.

Customization Options

Why Choose ECKO?

Transformer Manufacturing
Experience over
20+ Years

Engineering Design Support

Prototype Production
100% Electrical Testing

Custom Low-volume Production
Material Traceability
Drawing and Sample Approval
Production and Test Documentation
Quality Control

Finished Products-Impulse Test

Patrol Audit

Raw Material Inspection

Final Product QC

Inductive voltage test

No-load voltage

How to Customized with Us?

Step 1
Share Your Requirements
Reach out to us either via email or by filling out the submission form on our website.
Then our dedicated sales support team will promptly respond to your inquiry.

Step 2
Receive Your Quote
Within 24 hours, our sales team will provide you with a personalized quote tailored to your project requirements.
Prior to finalizing your order, we ensure transparency and confidence by sending product samples directly to you.

Step 3
Confirm Your Order
After carefully reviewing the product samples, proceed to confirm your bulk order with us.
Rest assured, we’ll oversee your order to guarantee that the manufacturing process upholds the highest quality standards.

Step 4
Product Management and Fulfillment
Our efficient product management and production team ensure timely delivery.
Your product are safeguarded with utmost care, as our warehouses prioritize safety and security.

FAQ

Q:What is a 1000W toroidal transformer for an audio amplifier? 
A 1000W toroidal transformer is a high-power AC transformer designed to provide stable and efficient power for professional audio amplifiers, Hi-Fi amplifiers, power amplifier systems, and other high-performance audio equipment.Compared with conventional laminated transformers, the toroidal structure provides high efficiency, low magnetic leakage, compact dimensions, low operating noise, and excellent voltage regulation, making it particularly suitable for demanding audio applications.

Q: Why are toroidal transformers widely used in power amplifiers? 
Toroidal transformers are particularly suitable for audio amplifiers because their closed magnetic circuit helps minimize stray magnetic fields and electromagnetic interference (EMI).Key advantages include:
Low magnetic leakage
Low mechanical hum and vibration
High power efficiency
Low no-load loss
Compact size and high power density
Good voltage regulation
Lower interference with sensitive audio circuits
These characteristics help provide a clean and stable power supply for amplifier circuits.

Q: Can you customize a 1000W toroidal transformer for my amplifier? 
ECKO provides OEM and ODM toroidal transformer solutions based on the electrical and mechanical requirements of your amplifier.We can customize:
Input voltage
Output voltage
Output current
Rated power
Single or multiple secondary windings
Transformer diameter and height
Lead wire length and color
Terminals and connectors
Mounting hardware
Electrostatic shielding
Magnetic shielding
Thermal fuse or thermal switch
Encapsulation and insulation requirements
Please send us your transformer specifications, schematic, existing transformer label, or amplifier power supply requirements for evaluation.

Q: What input voltages are available for a 1000W amplifier transformer? 
The primary voltage can be customized according to the destination market and amplifier design.Common input options include:
100V / 110V / 115V / 120V / 127V / 220V / 230V / 240V AC, 50/60Hz
Dual-primary designs, such as 115V + 115V, can also be produced for equipment intended for different international markets.

Q:Can you customize dual output voltages such as 35V-0-35V or 50V-0-50V? 
Center-tapped and dual-secondary outputs are commonly used in audio power amplifier applications.Examples include:
30V-0-30V
35V-0-35V
40V-0-40V
45V-0-45V
50V-0-50V
55V-0-55V
60V-0-60V
The actual secondary voltage and current should be selected according to the amplifier topology, required DC rail voltage, load impedance, and output power.

Q:Can a 1000W toroidal transformer have multiple secondary windings? 
Multiple secondary windings can be integrated into one toroidal transformer.For example, the main winding can supply the power amplifier stage, while additional low-voltage windings can supply control circuits, protection boards, fans, relays, displays, or pre-amplifier circuits.
Please provide the required voltage and current for each secondary winding when requesting a quotation.

Q:Is a 1000W toroidal transformer suitable for Class A, Class AB, Class D, or Class H amplifiers? 
Toroidal transformers can be designed for different amplifier topologies, including Class A, Class AB, Class D, and Class H amplifier systems.
However, transformer specifications should be selected according to the amplifier's actual power consumption, rail voltage, load characteristics, peak current requirements, and operating conditions.
For high-power amplifier applications, our engineers can optimize the transformer design according to your power supply requirements.

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Electrostatic Shield (Customer Specified) • Reduces capacitive coupling between primary and secondary windings. • Copper foil (2 mil) laminated between polyester film and tape. • Tightly wound over primary insulation.	Primary to Secondary Insulation • Polyester film-Class B (130°C) • Four layers minimum between windings • Meets test requirement of 4000V RMS for 1 minute between primary and secondary.	Windings • Base coat of Polyester. Heavy topcoat of amide imide (200°C) • Wound uniformly over entire core • Better heat dissipation • Windings configured for minimum flux leakage • Low voltage maintained between adjacent turns	Thermal Protection (Customer Specified) • Usually in primary circuit • Normally closed-auto reset opens at high temperature • One-shot fuse also available	Core Insulation • All cores: 100% surface coverage of four layers of 2 mil polyester film Class B (130°C) • Protects, insulates and cushions the core from windings and reduces vibration
Core • Cores are manufactured and annealed in-house, under controlled conditions • Continuous tightly wound grain oriented silicon steel...no airgaps, no mechanical noise • Lathed radial corners... compact design, most efficient use of materials • No core caps necessary	Magnetic Shield (Customer Specified) • Multiple layers of grain oriented silicon steel tightly wound around the toroid’s circumference • Fixed in place by outer insulation	Outer Insulation • Tape wound type: Standard two layers polyester film Class B (130°C) • Magnetic enclosures optional	Center Hole Potting (Customer Specified) • Thermoplastic material • High mounting precision • Threaded insert or press fitted stud is optional • Thermally conductive compound available	Wire Leads • Choice of two types of leads connected to windings: Self leads: The magnet wire is extended through sleeving for connection to circuit. Standard: Class A (105°C) Stranded wire leads: Class A (105°C) - Class H (180°C) • Each lead anchored to toroid body with high tensile strength tape to withstand severe pull test • Primary leads covered with second layer of sleeving - double insulation... standard on all units • Color, length, stripping and terminations can be customer specified.

Step 1 Share Your Requirements Reach out to us either via email or by filling out the submission form on our website. Then our dedicated sales support team will promptly respond to your inquiry.	Step 2 Receive Your Quote Within 24 hours, our sales team will provide you with a personalized quote tailored to your project requirements. Prior to finalizing your order, we ensure transparency and confidence by sending product samples directly to you.
Step 3 Confirm Your Order After carefully reviewing the product samples, proceed to confirm your bulk order with us. Rest assured, we’ll oversee your order to guarantee that the manufacturing process upholds the highest quality standards.	Step 4 Product Management and Fulfillment Our efficient product management and production team ensure timely delivery. Your product are safeguarded with utmost care, as our warehouses prioritize safety and security.

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1000W Toroidal Transformer for Audio Amplifier

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High Performance Toroidal Transformer For Your High Performance Applications

A Brief Discussion on the Wide Applications of Toroidal Transformers Across Industries

Information

Rated Power (VA)	Voltage Regulation (%)	Efficiency (%)	Dimension(mm)		Weight (Kg)
Rated Power (VA)	Voltage Regulation (%)	Efficiency (%)	Height(C)	Diameter(A)	Weight (Kg)
30	16	83	30	80	0.60
100	11	88	42	100	1.30
150	7.30	90	45	115	1.85
200	6.2	91	53	123	2.30
250	5.60	92	53	128	2.60
300	5.30	93	55	135	3.00
400	4.60	94	60	140	3.80
500	4.30	95	66	146	4.50
800	4.0	95	85	160	7.00
1000	3.80	96	90	165	8.50
1200	3.30	96	95	168	9.00
1500	3.0	96	100	173	9.50
2000	2.90	96	110	183	13.00
4000	2.2	97	135	245	23.00
5000	2.1	98	145	270	28.00

Q:What is a 1000W toroidal transformer for an audio amplifier?	A 1000W toroidal transformer is a high-power AC transformer designed to provide stable and efficient power for professional audio amplifiers, Hi-Fi amplifiers, power amplifier systems, and other high-performance audio equipment. Compared with conventional laminated transformers, the toroidal structure provides high efficiency, low magnetic leakage, compact dimensions, low operating noise, and excellent voltage regulation, making it particularly suitable for demanding audio applications.
Q: Why are toroidal transformers widely used in power amplifiers?	Toroidal transformers are particularly suitable for audio amplifiers because their closed magnetic circuit helps minimize stray magnetic fields and electromagnetic interference (EMI). Key advantages include: Low magnetic leakage Low mechanical hum and vibration High power efficiency Low no-load loss Compact size and high power density Good voltage regulation Lower interference with sensitive audio circuits These characteristics help provide a clean and stable power supply for amplifier circuits.
Q: Can you customize a 1000W toroidal transformer for my amplifier?	ECKO provides OEM and ODM toroidal transformer solutions based on the electrical and mechanical requirements of your amplifier. We can customize: Input voltage Output voltage Output current Rated power Single or multiple secondary windings Transformer diameter and height Lead wire length and color Terminals and connectors Mounting hardware Electrostatic shielding Magnetic shielding Thermal fuse or thermal switch Encapsulation and insulation requirements Please send us your transformer specifications, schematic, existing transformer label, or amplifier power supply requirements for evaluation.
Q: What input voltages are available for a 1000W amplifier transformer?	The primary voltage can be customized according to the destination market and amplifier design. Common input options include: 100V / 110V / 115V / 120V / 127V / 220V / 230V / 240V AC, 50/60Hz Dual-primary designs, such as 115V + 115V, can also be produced for equipment intended for different international markets.
Q:Can you customize dual output voltages such as 35V-0-35V or 50V-0-50V?	Center-tapped and dual-secondary outputs are commonly used in audio power amplifier applications. Examples include: 30V-0-30V 35V-0-35V 40V-0-40V 45V-0-45V 50V-0-50V 55V-0-55V 60V-0-60V The actual secondary voltage and current should be selected according to the amplifier topology, required DC rail voltage, load impedance, and output power.
Q:Can a 1000W toroidal transformer have multiple secondary windings?	Multiple secondary windings can be integrated into one toroidal transformer. For example, the main winding can supply the power amplifier stage, while additional low-voltage windings can supply control circuits, protection boards, fans, relays, displays, or pre-amplifier circuits. Please provide the required voltage and current for each secondary winding when requesting a quotation.
Q:Is a 1000W toroidal transformer suitable for Class A, Class AB, Class D, or Class H amplifiers?	Toroidal transformers can be designed for different amplifier topologies, including Class A, Class AB, Class D, and Class H amplifier systems. However, transformer specifications should be selected according to the amplifier's actual power consumption, rail voltage, load characteristics, peak current requirements, and operating conditions. For high-power amplifier applications, our engineers can optimize the transformer design according to your power supply requirements.