BP350ST-UL

Focused Sound Capture
The interference tube rejects off-axis noise and concentrates pickup on distant sound sources.

Mid-Side Stereo Recording
Independent line-cardioid and figure-of-eight elements provide natural stereo imaging and clear separation.

Selectable Output Modes
Choose wide stereo, narrow stereo or discrete mid-side output for recording and postproduction flexibility.

High-SPL Performance
Maintains a crisp, balanced response when capturing loud sound sources.

Camera-Ready Design
The compact microphone mounts securely to cameras and support rigs for mobile recording.

Adjustable Mounting
The included clip attaches at different angles to accommodate nearby camera accessories.

Ambient Noise Control
A switchable high-pass filter helps reduce unwanted low-frequency noise.

Professional Connectivity
The stereo output cable supports connection to camera inputs and phantom-powered microphone preamplifiers.

Mounting System Compatibility
Works with most ATM350a mounts and mounting systems for additional placement options.

Portable Protection
The included windscreen and carrying case support recording and transport in the field.

General Specifications
Device Type: Camera-mount MS stereo shotgun microphone
Element: Fixed-charge back plate, permanently polarized condenser
Polar Patterns: Line and gradient, figure-of-eight
Frequency Response: 40 Hz to 20,000 Hz
Impedance: 50 ohms

Filter and Controls
Low-Frequency Roll-Off: 80 Hz, 18 dB/octave
Stereo Modes: MS, LR-W, LR-N
Filter Settings: Flat, low cut
Control Location: AT8547 power module

Sensitivity
Mid Sensitivity: -29.5 dB, 33.5 mV, 0 dB = 1 V/Pa at 1 kHz
Side Sensitivity: -35 dB, 17.8 mV, 0 dB = 1 V/Pa at 1 kHz
Left/Right Sensitivity: -36 dB, 15.9 mV, 0 dB = 1 V/Pa at 1 kHz

Acoustic Performance
Maximum Input Level, Mid: 144 dB SPL at 1 kHz, 1% THD
Maximum Input Level, Side: 149.5 dB SPL at 1 kHz, 1% THD
Dynamic Range, Mid: 126 dB at 1 kHz and maximum SPL
Dynamic Range, Side: 125.5 dB at 1 kHz and maximum SPL
Signal-to-Noise Ratio, Mid: 76 dB at 1 kHz, 1 Pa, A-weighted
Signal-to-Noise Ratio, Side: 70 dB at 1 kHz, 1 Pa, A-weighted
Signal-to-Noise Ratio, Left/Right: 72 dB at 1 kHz, 1 Pa, A-weighted

Power Requirements
Phantom Power: 48 V DC
Current Consumption: 8.2 mA, both channels total

Environmental
Operating Temperature: -10°C to 60°C (14°F to 140°F)
Storage Temperature: -20°C to 60°C (-4°F to 140°F)
Storage Humidity: 10% to 90% RH, non-condensing

Dimensions and Weight
Microphone Length: 159.7 mm (6.3 in)
Microphone Body Diameter: 12.7 mm (0.50 in) maximum
Microphone Weight: 43 g (1.5 oz)
Power Module Length: 125 mm (4.9 in)
Power Module Diameter: 21 mm (0.83 in)
Power Module Maximum Width: 28 mm (1.1 in)
Power Module Weight: 49 g (1.7 oz)

Cables and Connections
Attached Microphone Cable: 0.3 m (0.98 ft)
Stereo Output Cable: 0.36 m (1.2 ft)
Microphone Connector: 5-pin mini XLR-F
Power Module Connector: 5-pin mini XLR-M
Stereo Output Connectors: Dual XLR3-M

Compatibility
Mount Compatibility: Most ATM350a mounts and mounting systems
Camera Installation: Camera microphone mounts and compatible third-party mounts

Included Accessories
Power Module: AT8547
Windscreen: AT8180
Mount Clip: AT8495
O-Rings: 2
Stereo Output Cable: TA5F to dual XLR3-M
Carrying Case: Hard shell