EVERSOLO EM-01

The Eversolo EM01 is a 6mm omnidirectional condenser microphone designed for high-precision audio measurements. Equipped with a USB-C interface, it is compatible with Windows, Mac, iOS, and Android. Includes cables, stand, and windscreen.

Description

Eversolo EM-01: The Reference Microphone for Room Calibration

The Eversolo EM-01 enters the world of precision acoustics as a highly specialized instrument, designed to rigorously address the challenges of room measurement. It is not just a recording microphone, but a device designed to provide reliable and repeatable data, essential for proper room calibration. Thanks to its omnidirectional design and the use of a highly sensitive 6mm condenser capsule, the EM-01 is able to consistently and accurately capture the entire audible frequency range.

The all-aluminum alloy construction combines lightweight and ruggedness. The choice of materials not only contributes to the mechanical resistance of the microphone body, but also improves resonance management, reducing physical interference that could compromise measurement accuracy. Its compact size and weight of just 47 grams make the EM-01 an ideal ally even in complex installations or on mobile stands, ensuring maximum convenience during acoustic measurement.

The Type-C connector allows for direct interface with most modern devices—Windows, macOS, Android, iOS—making the microphone a seamless component for digital measurement systems, particularly with Eversolo products. Compatibility with the UAC1.0 protocol ensures plug-and-play functionality, without the need for additional drivers.

Sensitivity, Frequency Response, and Sampling

At the heart of the Eversolo EM-01 is an electret capsule capable of offering a sensitivity level of -13dBFS at 1kHz, with minimal tolerance. This feature makes it suitable for capturing the finest sonic nuances, but also perfectly resistant to high sound pressure levels, up to 130 dB SPL with a harmonic distortion rate of 1%. This combination of sensitivity and resilience makes it suitable not only for environmental measurements in domestic environments, but also for more complex tests on speakers, subwoofers, and systems in high-volume spaces.

The frequency response covers the range from 20Hz to 20kHz with a deviation of less than ±1dB, a precision that is further refined by the use of a unique calibration file for each unit. This file ensures an exact match between the detected signal and the acoustic reality, significantly improving the reliability of the data, both with proprietary software and third-party tools such as REW or DIRAC.

The 24-bit analog-to-digital converter operates at 48kHz sampling, offering a very high level of sonic definition. This combination of bitrate and sampling rate allows for every transient to be reproduced with great fidelity, maintaining timbral and dynamic integrity.

The noise floor, rated at -84dBFS at +30dB IGPA with an A-weighted filter, demonstrates the circuit's effectiveness in maintaining clean output even in the presence of profound silence or poorly treated environments, making the microphone particularly suitable for analysis at low sound levels.

Controlled Environment and Field Applications

The Eversolo EM-01 was designed as a component dedicated to automated acoustic calibration in conjunction with Eversolo music players, leveraging the devices' built-in software to detect room response and optimize it. However, its compatibility with third-party measurement software—such as Room EQ Wizard (REW), DIRAC Live, and similar—significantly expands the microphone's range of uses, even in professional and semi-professional settings.

In HiFi listening environments, the EM-01 allows for detailed room profiles, providing crucial information for addressing early reflections, modal resonances, speaker placement, and passive treatment. When used to analyze multichannel or home theater systems, it proves particularly effective in identifying tonal imbalances or phase issues between channels.

In the field, its high-pressure resistance also makes it suitable for measuring complex sources such as PAs, guitar amplifiers, or high-SPL acoustic instruments. The included stand—consisting of a desktop tripod, a windscreen, and two USB cables (Type-C to Type-C and Type-C to USB-A)—facilitates use in a wide range of operating conditions.

User Experience, Portability, and Reliability

One of the Eversolo EM-01's greatest strengths lies in its ease of use. The device requires no complex configuration: once connected, it is immediately recognized by the operating system thanks to its compliance with the UAC1.0 standard. This eliminates the need for proprietary drivers or software, promoting greater interoperability.

Professional users will appreciate the consistency of the returned data and the structural reliability of the microphone. Its metal alloy construction and compact assembly make it resistant to transport, moderate shock, and variable operating conditions. The elongated cylindrical format, measuring 155 mm in length, lends itself to precise positioning even in crowded environments.

A specific calibration file for each unit allows for rigorous profiling, especially when working with advanced software. This accuracy significantly reduces the need for subsequent manual corrections and allows for immediate reading of the response curves.

From a power standpoint, the EM-01 requires only 5V power via USB, eliminating the need for batteries or external power supplies. This allows for quick and easy setup, even on the move or in unsuitable environments.

These features make the EM-01 an essential choice for audio engineers, installation technicians, advanced audiophile enthusiasts, and acoustic designers who want to integrate a precise, reliable measurement tool into their workflows, one that is, above all, consistent with contemporary digital room correction standards.

TECHNICAL SPECIFICATIONS

Type: 6mm electret condenser

Body Material: Aluminum alloy

Total Length: 155mm

Directivity: Omnidirectional

FrequencyResponse Range: 20~20,000Hz±1dB (with calibration file applied)

Sensitivity at 1kHz: -13±2.0 dBFS

Noise Level @+30dB IGPA: -84dBFS @ A-wt

Maximum SoundPressure Level @1% THD @1kHz: 130dBSPL

Sampling Rate: 24bit ADC @ 48kHz

Power Supply: +5V USB power only

Weight: 47g

Type-C Interface: UAC1.0 compatible with Windows, Mac, iOS and Android systems

Accessories:

Desktop tripod stand ×1

Microphone holder ×1

3-meter Type-C to USB-A data cable ×1

1-meter Type-C to Type-C OTG data cable ×1

Windscreen ×1

User manual ×1