Description
The Sony ECM-B1M is an ultra-compact camera-mount digital shotgun microphone designed for mobile video creators working with Sony cameras equipped with the Multi Interface Shoe. Released alongside the a7R IV, which benefits from its built-in Digital Audio Interface, the ECM-B1M is able to produce its best quality by delivering a digital audio stream directly to the camera through the Multi Interface Shoe. Other Sony cameras with the standard Multi Interface Shoe can still make use of the microphone as there is a selectable digital/analog output.
Specifications:
| Primary Applications | ENG (Electronic News Gathering), Audio for Video, Location Sound, Field Recording |
| Form Factor | Camera-Mount |
| Intended Sound Sources | Vocals, Speech/Voice-Over, Room Ambiance |
| Sound Field | Mono |
| Operating Principle | Pressure Gradient Pressure Operated |
| Element Type | 8x Electret Condenser |
| Polar Pattern | Cardioid, Omnidirectional, Supercardioid |
| Pattern Selection | Switched |
| Orientation | End Address |
| Circuitry | Solid-State |
| Pad | -10 dB -20 dB |
| High-Pass Filter | Yes |
| Tone Adjustment | No |
| Gain Adjustment | Yes |
| Indicators | No |
| On-Board Controls | Gain/Sensitivity, High-Pass Filter, Pad, Polar Pattern |
| Frequency Range | 40 Hz to 20 kHz |
| Maximum SPL | 120 dB SPL |
| Sensitivity | -20 dBFS at 1 kHz |
| Dynamic Range | 106 dB |
| Analog Output | No |
| USB/Digital Output | 1x Sony Multi Interface Shoe |
| Wireless | No |
| Digital Signal Processing | Noise Reduction |
| OS Compatibility | No |
| Mounting | Camera/Shoe-Mount (via Integrated Hardware) |
| Mounting Thread Size | Included Mount Has No Threading |
| Included Filters | No |
| Operating Temperature | 32 to 104°F / 0 to 40°C |
| Storage Temperature | -4 to 131°F / -20 to 55°C |
| Dimensions | H: 3.22 x W: 1.08 x L: 3.91″ / H: 81.8 x W: 27.4 x L: 99.3 mm |
| Weight | 2.8 oz / 79 g |
Package Includes:
1 x Sony ECM-B1M Camera-Mount Digital Shotgun Microphone
1 x Fur Windscreen
1 x Storage Pouch






















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