Superlux ECM888B Studio Condenser Microphone

Professional Measurement Microphone for Sound System Tuning

Built for acoustic analysis and PA system calibration, the Superlux ECM888B is an omnidirectional condenser measurement microphone that captures room frequency response with minimal coloration. Designed to feed accurate data into RTA software, FFT analyzers, and room correction processors, this microphone serves sound engineers who need reliable, repeatable measurements during system tuning and live sound setup. The ECM888B is the right tool for professionals working in venues, studios, and installation environments where acoustic verification matters.

Battery-Powered Convenience with Flat Response

Unlike most measurement microphones that require phantom power, this model runs on a single 4LR44 6V battery, making it portable and ready to use with any audio interface or mixer input. The pressure-element design with FET preamplifier delivers a flat, uncolored frequency response from 20 Hz to 20 kHz, ensuring that what the microphone captures reflects the true acoustic character of the room or speaker system being measured. A shockmount clip and protective carrying case are included for transport and setup.

Flat Response for Accurate Room Analysis

A measurement microphone's value lies in its ability to reproduce sound without adding its own character. The specifications below reflect this priority.

• Frequency Response: 20 Hz – 20 kHz — full-range coverage for capturing sub-bass room modes through high-frequency reflections
• Sensitivity: -43 dBV/Pa (7.1 mV/Pa) ±3 dB — consistent output level for reliable comparison readings across sessions
• Polar Pattern: Omnidirectional — captures sound equally from all directions, ideal for measuring room reverberation and ambient response

Clean Signal Path for Precise Measurements

Low self-noise and proper impedance matching ensure that this measurement tool doesn't introduce artifacts into measurement data.

• Rated Impedance: 800 Ω — standard output impedance for professional audio interfaces
• Minimum Load Impedance: 3,000 Ω — ensures proper damping and frequency response when connected to preamp inputs
• Equivalent Noise Level: 22 dB — low self-noise floor for measuring quiet acoustic environments
• Max SPL: 128 dB SPL (THD ≤ 1% at 1 kHz) — handles loud live sound environments without distortion

Portable Design with Long Battery Life

Battery-powered operation eliminates the need for phantom power, making this model ready to use with any input.

• Power Supply: 4LR44 6V battery — no phantom power required, over 300 hours of continuous operation
• Current Consumption: 0.5 mA — efficient power draw for extended measurement sessions
• Connector: 3-pin male XLR — standard professional connection for audio interfaces and mixing consoles
• Dimensions: 21 × 170 mm — slim pencil-style form factor for easy positioning on mic stands
• Weight: 150 g (5.30 oz), battery excluded — lightweight enough for boom stands and desktop setups

Sound Engineers, PA Tuners, and Live Sound Technicians

Designed for professionals who need accurate acoustic measurement tools at an accessible price point, the ECM888B fits a range of real-world workflows. Sound system tuners use it to analyze room frequency response and identify problematic resonances before applying EQ corrections. Live sound technicians rely on it for quick PA alignment during setup, feeding pink noise or sweep signals into RTA software. Recording engineers find it useful for checking room acoustics before tracking sessions. The battery-powered design makes it especially practical for field measurements where phantom power may not be available. The ECM888B is the right choice for audio professionals who need a reliable measurement microphone without the premium price of laboratory-grade alternatives.