ZXYAUDIO EE25 Audio MIC Isolation Transformer - High Fidelity Signal Isolation and Impedance Matching, High-Permeability Laminated Core, Color-Coded Lead Wires, CE RoHS ISO 9001 UL
The EE25 is a passive audio MIC isolation transformer on a high-permeability laminated core, with tight multi-layer copper winding and colour-coded flying leads. It provides high-fidelity signal isolation and impedance matching with low distortion and low noise, and is 100% electrically and acoustically tested.
- High-fidelity isolation and impedance matching between source and load
- High-permeability laminated core of precision-stamped silicon / nickel steel
- Tight multi-layer copper winding for repeatable batch-to-batch characteristics
- Low noise with magnetic shielding against external interference
- Custom impedance, turns ratio and lead-wire lengths; CE / RoHS / ISO 9001 / UL
1. Product Overview
The EE25 Audio MIC Isolation Transformer is a passive, lead-wire audio transformer built on a high-permeability laminated core. It provides high-fidelity signal isolation and impedance matching between microphone capsules, audio circuits and downstream equipment, and is supplied with custom impedance, turns ratio and lead-wire lengths.
EE25 audio MIC isolation transformer: high fidelity signal isolation and impedance matching
2. Key Features
| Feature | Description |
|---|---|
| Signal isolation & impedance matching | High-fidelity isolation between input and output circuits; matches source and load impedance to preserve signal integrity. |
| Low distortion | High-fidelity coupling maintains low distortion across the working signal range. |
| Low noise & magnetic shielding | Shields the audio path from external electromagnetic interference in dense assemblies. |
| High-permeability laminated core | Precision-stamped silicon / nickel steel laminations stacked in multiple layers. |
| Tight multi-layer copper winding | Consistent winding geometry for repeatable electrical characteristics. |
| Flexible lead wire lengths | Color-coded flying leads in customer-specified lengths for drop-in assembly. |
| 100% tested | Every unit is electrically and acoustically tested before shipment (QC passed). |
High-permeability laminated core: precision stamped silicon / nickel steel, tight multi-layer copper winding
Impedance matching and low distortion: high fidelity signal coupling, low noise and magnetic shielding
3. Advantages
| Advantage | Value |
|---|---|
| Custom impedance & turns ratio | Electrical performance tailored to the target circuit, not limited to catalogue values. |
| High stability & consistency | Controlled lamination and winding deliver uniform batch-to-batch characteristics. |
| Premium audio performance | Clean, stable transfer of voice and music signals. |
| Direct factory supply | Custom builds are produced and tested in-house, keeping customization and volume supply aligned. |
| Certified quality | CE, RoHS, ISO 9001:2015 and UL recognized component status support export and approval. |
Customized builds: custom impedance and turns ratio, flexible lead wire lengths, direct factory supply
4. Applications
| Application Field | Function |
|---|---|
| Professional Audio Recording | Recording studios rely on them for high-fidelity capture: impedance matching and signal transformation preserve every detail, from the rich timbres of orchestral instruments to the nuances of a singer's voice. |
| Communication Devices | In two-way radios and VoIP headsets they amplify weak microphone signals and isolate the signal path from electrical interference, keeping voice messages clear in noisy industrial environments and making online meetings sound natural. |
| Consumer Electronics | In smartphones and portable recorders they improve built-in microphone performance for calls, voice assistants and voice-to-text, and enable high-quality recording of personal notes, interviews and ambient sound. |
| Broadcasting and Television | In broadcast studios and TV recording sites they reduce external electromagnetic interference and amplify microphone signals, ensuring clear and stable audio output for radio and TV programs. |
| Security and Surveillance | In audio-capable security cameras they capture sound clearly while filtering environmental noise, adding an audio dimension that helps personnel assess abnormal situations. |
Broad audio application fields: pro audio recording, broadcasting and TV, VoIP and two-way radios, security audio surveillance
Typical integration in professional audio equipment, wired to a mixing console
5. Specifications
| Parameter | Specification |
|---|---|
| Transformer type | Passive audio isolation / MIC transformer, lead-wire type |
| Impedance & turns ratio | Customized to customer requirement (impedance matching) |
| Signal performance | High-fidelity signal coupling; low distortion |
| Noise & shielding | Low noise; magnetic shielding |
| Core | High-permeability laminated core: precision-stamped silicon / nickel steel, multi-layer stack |
| Winding | Tight multi-layer copper winding |
| Termination | Color-coded lead wires (8 per outline drawing); flexible lead length |
| Outline dimensions | Per outline drawing: tape width, core width, core height, core stack thickness |
| Testing | 100% electrically and acoustically tested; QC passed |
| Compliance | CE mark; RoHS compliant; ISO 9001:2015; UL recognized component (UL File E498875) |
Note: impedance, turns ratio and lead-wire length are customized per application; outline dimensions follow the customer-approved drawing.
Outline drawing: top, front and side views with 3D isometric view
Note: the outline drawing defines tape width, core width, core height and core stack thickness for the approved build; no dimension values are printed on the supplied drawing, so body dimensions are not stated here.
6. Quality & Testing Assurance
Every EE25 unit is 100% electrically and acoustically tested before packing, and production runs under an ISO 9001:2015 certified quality management system. The product carries the CE mark, complies with the RoHS directive on hazardous substances and is manufactured as a UL recognized component (UL File E498875), delivering safe, reliable performance and consistent certified quality.
| Standard / Mark | Status |
|---|---|
| CE Mark | Conformité Européenne |
| RoHS | Compliant — restriction of hazardous substances |
| ISO 9001:2015 | Quality management system |
| UL | Recognized component — UL File E498875 |
| Testing | 100% electrically & acoustically tested |
100% electrically and acoustically tested: high stability and consistency, QC passed
International quality standards and compliance: CE, RoHS, ISO 9001:2015, UL recognized component
Model: EE25 | Passive Audio MIC Isolation Transformer | CE / RoHS / ISO 9001:2015 / UL File E498875. Impedance, turns ratio, lead-wire length and outline are customized per application: please send your required impedance, turns ratio, lead length, quantity and destination port for a quotation.