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ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment 1

ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment 2

ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment 3

ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment 4

ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment 5

ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment 6

ZXY-EI28 600:600 Permalloy Audio Isolation Transformer for Studio Equipment

The EI28 audio isolation transformer from ZXYAUDIO uses high-grade permalloy core material to realize low distortion and excellent anti-interference capability. It features a 600:600 impedance ratio, delivering balanced audio signal transmission ideal for professional audio systems. Thanks to precise winding technology, this transformer maintains flat frequency response and effectively eliminates ground loop interference, greatly improving audio signal purity. Widely applied to mixers, audio processors, studio equipment and other professional audio devices.

Model:

ZXY-EI28 (600:600 Ratio)

Packaging Details:

Carton

Negotiable:

Stock or about 2 weeks

Price:

Negotiable

Size:

Customized / Miniature Component Dimensions

Place of Origin:

Shenzhen, China

Minimum order quantity:

1000 pcs

Color:

Silver / Metal Shielded Casing

Material Science:

High-Permeability Permalloy Core, Enamelled Copper Winding

Packing:

Customized Anti-Static Packaging

Delivery time:

3 - 4 weeks

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product Parameter

Parameter Item	Specification / Range
Product Model	ZXY-EI28 Audio Isolation Transformer
Turns / Impedance Ratio	600 : 600 (1:1 Ratio)
Core Material	High-Permeability Permalloy Core
Operating Frequency	20 Hz ~ 20 kHz (Audio Band)
Dielectric Strength (Hi-Pot)	1,500 VAC ~ 2,000 VAC
Insulation Resistance	≥ 100 MΩ
DC Resistance (DCR)	Custom tailored to minimize copper loss
Application	Professional Audio Equipment, Ground Loop Isolation, Signal Coupling

Product detail

Standard 600Ω:600Ω Impedance Matching

Professional 1:1 coupling transformer designed for balanced line-level audio signals, microphone preamplifiers, and audio interface isolation applications.

High-Performance Permalloy Core

Utilizes ultra-high permeability Permalloy magnetic core material to deliver extended low-frequency response, minimal core loss, and exceptionally low total harmonic distortion (THD) for pristine audio fidelity.

Galvanic Isolation & Noise Rejection

Effectively breaks ground loops and suppresses common-mode noise, eliminating 50/60Hz hum and RF interference commonly found in professional audio chains.

Anti-Microphonic Mechanical Design

Equipped with soft rubber mounting feet to absorb physical vibrations, preventing mechanical noise from coupling into the audio signal — ideal for high-gain preamplifier stages.

Compact EI28 PCB Mounting

Standard 2+2 soft pin DIP through-hole layout enables secure, space-saving PCB integration, suitable for both prototyping and mass production.

High-Temperature Insulation & Durability

Wrapped with heat-resistant yellow insulating tape and housed in a rigid bobbin structure, ensuring excellent dielectric strength, thermal stability, and long-term reliability.

RoHS, REACH & CE Compliant

Manufactured with environmentally safe materials and fully certified to meet international regulatory standards, facilitating hassle-free global customs clearance and distribution.

Product Showcase

faqs

What is the EI28 600:600 Audio Isolation Transformer used for?

A: This transformer is designed for professional audio applications requiring galvanic isolation, ground loop elimination, and impedance matching. It is commonly used in microphone preamplifiers, broadcasting consoles, DI boxes, audio interfaces, and high-fidelity audio systems to ensure clean, noise-free signal transmission while protecting downstream equipment from DC offset and voltage surges .

What does "600Ω:600Ω" impedance ratio mean?

A: This is a 1:1 coupling transformer designed for line-level audio signals and telephone communication interfaces . The 600Ω specification indicates the transformer is intended to be driven by and loaded with 600Ω circuits for optimal frequency response . This matches the standard impedance of professional balanced audio lines, allowing the transformer to pass audio signals with minimal alteration while providing isolation .

What makes Permalloy core material special for audio applications?

A: Permalloy is a nickel-iron alloy with extremely high magnetic permeability, which provides several advantages for audio transformers:
Superior low-frequency response with higher primary inductance
Minimal core loss and very low distortion
Excellent low-level signal performance with extended frequency response
Compared to silicon steel cores, Permalloy delivers cleaner, more transparent
sound, especially for critical audio paths where signal purity is essentia

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