EIM-003 | 3.5mm TRRS Microphone Improves Sound Quality for Smartphones/Tablets

The EIM-003 is a 3.5mm 4-pole (TRRS/CTIA) microphone for your smartphones and tablets. It has a flat frequency response and a high SNR ratio which means you’re going to get the complete unspoiled original sound in your recording.

EIM-003: Professional Flat-Response Microphone for Authentic Sound


The EIM-003 is a 3.5mm 4-pole (TRRS/CTIA) microphone designed for those who demand the complete, uncolored, and original sound in their recordings. Unlike microphones that boost specific frequencies, the EIM-003 features a flat frequency response, ensuring that your recordings remain faithful to the source.


With a high Signal-to-Noise Ratio (62dB+), it minimizes background hiss, making it perfect for capturing music, professional presentations, screen captures, or high-quality external audio for smartphone videos.

Note on Sensitivity: The EIM-003 is designed for clarity rather than distance. While the output volume is similar to built-in mics, the sound quality is significantly superior. 

For high-sensitivity recording from a distance, we recommend the EDUTIGE EIM-001 (-22dB).


SPECIAL UPDATE: The EIM-003 now includes two EMM-001 microphone mounts (1 Black & 1 White). These mounts are precision-fit for official Apple Lightning and USB-C to 3.5mm adapters.


What’s Included:

  • 1 x EIM-003 Microphone

  • 1 x Foam Windscreen

  • 2 x EMM-001 Microphone Mounts (Black & White)


Technical Specifications
  • Directivity: Omnidirectional (360 degrees)
  • Sensitivity: -37dB (1 kHz at 1Pa)
  • Frequency response: 20-20000 Hz
  • Dimensions: 9 x 18mm(0.4 x 0.7 in) (without plug)
  • S/N Ratio: 62dB+
  • Plug: 3.5mm 4-pole Gold-plated
  • Weight: 3.8 gram (0.2 oz)
  • Power supply: Plug-in power (No batteries required) 


 Compatibility Guide

  • Smartphones & Tablets: Works with all devices featuring a 3.5mm 4-pole (TRRS/CTIA) combo jack.

  • Modern Devices (No Headphone Jack): Compatible via official Lightning or USB-C to 3.5mm adapters. The included EMM-001 mounts are specifically designed for these official adapters.

  • Cameras & Audio Recorders (3-pole/TRS): Not directly compatible. To use with DSLRs, mirrorless cameras, or digital voice recorders, you MUST use the EDUTIGE ETG-004 adapter.