The Harmonai EM-678 is a professional interview microphone designed specifically for video production and broadcast audio capture (EFP/ENG). Its length is precisely optimized for diverse applications—including indoor and outdoor recording. Utilizing acoustic interference principles, it achieves exceptional hypercardioid directivity, paired with a high-quality back-electret condenser capsule to deliver clean, pure audio signals for long-distance, narrow-angle pickup.

Key Advantages

• Hypercardioid polar pattern: Effectively suppresses off-axis and rear noise, capturing target sound sources with precision—even in noisy interview environments, delivering clean vocal recordings.
• Full-copper metal body: Lightweight at 204g, robust and durable; comfortable for extended handheld use—ideal for journalists working on location.
• Professional XLR output: Standard XLRM 3-pin male connector ensures seamless integration with mixers, recorders, camcorders, and other pro audio equipment.
• Flexible low-frequency control: Built-in low-cut high-pass filter allows on-the-fly adjustment to reduce wind noise and low-frequency environmental rumble.
• 48V phantom power: Complies with industry-standard 48V DC phantom power supply, drawing only 2mA—compatible with most professional recording devices.

Ideal Applications

The EM-678 excels in news interviews, documentary field recording, film & TV ENG/EFP production, outdoor person-on-the-street interviews, and live sports reporting. Whether used in studio environments or exposed to sun, wind, and rain, it delivers consistently stable and reliable audio performance.

Technical Specifications

CapsuleBack Electret Condenser Polar PatternHypercardioid Frequency Response40Hz–16kHz Sensitivity-38dB±3dB (1dB = 1V/Pa at 1kHz) Output Impedance500Ω±20% (at 1kHz) Maximum SPL130dB (T.H.D ≤1% at 1kHz) Signal-to-Noise Ratio70dB (1kHz at 1Pa) Dynamic Range106dB (1kHz at Max SPL) Power Supply48V Phantom Power (48V DC), 2mA Weight204g (excluding accessories) Body DimensionsΦ20×220mm Output ConnectorXLRM 3-pin male