This EI14 customized low-frequency audio isolation transformer is a professional 1:1 ratio signal isolation component designed specifically for microphone and analog audio system applications. Featuring a standard 600:600 Ohm impedance matching design, it utilizes high-precision double-wire winding technology and high-quality EI14 iron core structure to achieve galvanic isolation of audio signals while maintaining zero attenuation and zero distortion of original sound signals.

Optimized for low-frequency audio transmission, the transformer delivers stable frequency response covering the full audible audio range (20Hz-20kHz), effectively solving common audio problems such as ground loop noise, current hum, and signal interference. With compact size, rigorous industrial manufacturing standards, and excellent electrical stability, it provides a high-reliability customized solution for high-fidelity and anti-interference audio signal transmission.

• Professional Microphone Systems: Suitable for dynamic microphones, condenser microphones, and wireless microphone output terminals, isolating circuit interference to ensure pure and clear pickup signals.
• Studio & Recording Equipment: Applied to recording studio audio interfaces, preamplifiers, and monitoring audio circuits, eliminating background hum and improving audio separation and recording fidelity.
• Stage & Live Sound Systems: Matched with mixers, audio power amplifiers, and stage audio transmission lines, resisting on-site electromagnetic interference and ensuring stable audio transmission during live performances.
• Broadcasting & Conference Audio Devices: Used in radio broadcasting equipment, remote conference hosts, and public address systems, solving ground loop interference caused by multi-device docking and ensuring smooth, noise-free audio output.
• Industrial Custom Audio Modules: Supports customized PCB board-mounted audio isolation circuits, applicable to medical audio equipment, vehicle audio systems, and embedded low-frequency audio signal processing modules.

• Standard 1:1 Isolation & 600Ω Impedance Matching Strict 1:1 turn ratio design achieves complete audio signal isolation without voltage or current change. The professional 600:600 Ohm impedance perfectly matches mainstream microphone and professional audio equipment, ensuring lossless audio signal transmission and optimal sound quality restoration.
• Excellent Noise Suppression & Anti-Interference Ability Provides thorough galvanic isolation between input and output terminals, effectively eliminating 50/60Hz power frequency hum, ground loop noise, and external electromagnetic interference. Significantly reduces audio background noise and improves overall signal-to-noise ratio for pure, high-fidelity sound quality.
• Stable Low-Frequency Audio Performance Optimized EI14 iron core structure and precision winding process ensure smooth full-band frequency response (20Hz-20kHz) with ultra-low audio distortion. Perfectly restores low-frequency details of microphone pickup and avoids sound attenuation, distortion, or tone deviation.
• Customizable & Industrial-Grade Durability Supports personalized customization to meet diverse structural and parameter requirements of different audio equipment. Utilizes high-quality copper wire and high-insulation materials, featuring high voltage resistance, EMC/EMI compatibility, long service life, and stable long-term continuous operation performance.
• Compact & Easy Installation Miniature EI14 compact size saves equipment installation space, compatible with standard PCB mounting and embedded assembly methods. Easy to integrate into various miniature audio devices and modular circuits with high applicability.