Audio-Technica BP350ST-UB Stereo M-S Boundary Microphone

Engineered for professional broadcast, production and field recording applications, the BP350ST-UB features independent cardioid and figure-of-eight elements configured in an MS (mid-side) arrangement with switch-selectable internal matrixing. The mic element can be mounted using two included mounting solutions – a low-profile boundary housing and a 5" gooseneck with clip-on mount – to enable inconspicuous capture of true stereo sound.

The BP350ST-UB mid-side capsule provides crisp, clear, well-balanced response, even at high SPLs. A switch on the included AT8547 power module allows users to choose between left-right stereo output (wide or narrow) and discrete mid-side signals for later manipulation. Mid-side operation offers many advantages for postproduction editing, making it easier to place voices naturally in a mix, for example, and providing audio that won’t lose its depth when stereo channels are combined into a mono track. The two-mics-in-one configuration also helps reduce common problems with stereo miking, such as time alignment and comb filtering.

The BP350ST-UB’s element is housed within the same compact body as our popular ATM350a instrument mic, allowing it to be used not only with the included boundary housing, gooseneck, and clip-on mount, but with any of our ATM350a mounts and mounting systems. The snap-on grille of the included boundary housing provides easy access to the mic, which lodges securely into the boundary’s base plate. The back of the plate is magnetized for easy mounting on metal surfaces and also includes four holes for screw-mounting. With the gooseneck and clip-on mount, the mic can quickly be positioned in any number of locations for ideal, close-to-the-action sound pickup. The AT8491UC clip-on mount includes a 1/4" camera thread for use with a tripod or other device.

The mic’s permanently attached 7.6 m (25') cable is terminated with a TA5F connector that plugs into the power module. A switch on the power module allows users to select an 80 Hz high-pass filter to suppress unwanted ambient noise. The power module comes with a 36 cm (14.2") TA5F to dual-XLR5-M stereo cable that’s suitable for connecting to any traditional mic preamplifier with phantom power.

The microphone can be changed to a hypercardioid pattern by using the optional UE-H element, and to a Line-Cardioid pattern by using the UE-UL element (together with the AT8180 windscreen). This gives you greater flexibility to choose the optimal configuration depending on the recording environment.

Audio-Technica BP350ST-UB Stereo M-S Boundary Microphone Features:

Innovative small-format MS (mid-side) stereo microphone engineered for broadcast, production and field recording
Ideal for indoor/outdoor fixed sound recording of sporting events, press conferences, theater and studio productions, and documentary films
Independent cardioid and figure-of-eight condenser elements
Excellent channel separation and crisp, clear, well-balanced response, even at high SPLs
Switch-selectable MS mode and two internally matrixed stereo modes (wide and narrow)
Compact lightweight design
Rugged AT8490 5" gooseneck rigidly holds its shape, keeping microphone accurately positioned
AT8491UC universal clip-on mount provides safe and secure mounting to a host of surfaces
In-line AT8547 power module is equipped with a switchable 80 Hz high-pass filter
Compatible with all ATM350a mounts and mounting systems (available separately)
Interchangeable Cardioid, Hypercardioid, and Line-Cardioid Elements

Included accessories:

Power module (AT8547)
Boundary housing (AT8494)
Gooseneck (standard) (AT8490)
Universal mount (AT8491UC)
0.36 m (1.2') microphone cable
Hard shell carry case

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About the Manufacturer

Phone: 330-686-2600

Warranty: 1 Year; 2 Years on Headphones & In Ear Monitors; 5 Years on 40 Series, Artist Elite, Broadcast & Production, Midnight Blues Series; Lifetime on ATR & Premium Cable

Audio-Technica BP350ST-UB Stereo M-S Boundary Microphone Specifications

Audio-Technica BP350ST-UB Stereo M-S Boundary Microphone Specifications
Product Specifications	Element: Fixed-charge back plate, permanently polarized condenser Polar Pattern: Cardioid, figure-of-eight Frequency Response: 40 to 20,000 Hz Low Cut: 80 Hz, 18 dB/octave Open Circuit Sensitivity: MID: -33.5 dB (21.1 mV) (0 dB=1 V/Pa, 1 kHz) SIDE: -35 dB (17.8 mV) (0 dB=1 V/Pa, 1 kHz) L/R: -39.5 dB (10.6 mV) (0 dB=1 V/Pa, 1 kHz) Impedance: 50 ohms Maximum Input Sound Level: MID: 148 dB SPL (1 kHz at 1% THD) SIDE: 149.5 dB SPL (1 kHz at 1% THD) Dynamic Range: MID: 126 dB (1 kHz at Max SPL) SIDE: 125.5 dB (1 kHz at Max SPL) Signal-to-Noise Ratio: MID: 72 dB (1 kHz at 1 Pa, A-weighted) SIDE: 70 dB (1 kHz at 1 Pa, A-weighted) L/R: 69 dB (1 kHz at 1 Pa, A-weighted) Phantom Power Requirements: 48V DC, 8.2 mA (both channels total) Switches: Stereo mode selection (MS, LR-W, LR-N), Flat, Low cut Operating Temperature Range: -10°C to 60°C (14°F to 140°F) Storage Temperature Range: -20°C to 60°C (-4°F to 140°F), 10% to 90% RH (without condensation) Weight: Microphone: 17 g / 0.60 oz Power Module: 49 g / 1.7 oz Boundary Housing (AT8494): 87 g / 3.1 oz Dimensions: Microphone (L x D): 37.8 x 12.7 mm / 1.5” x 0.50” Power Module (L x D x W): 125 x 21 x 28 mm / 4.9” x 0.83” x 1.1” Cable Length Main Unit Cable: 7.6 m / 25’ Microphone Cable (included): 0.36 m / 1.2’ Output Connector Power Module: 5-pin mini XLR-M type Microphone: 5-pin mini XLR-F type