Audio-Technica debuts BP350ST-UB and BP350ST-UL MS Stereo Microphones

Stow, OH, April 15, 2026 — Audio-Technica introduces two new MS (mid-side) stereo broadcast microphones: the BP350ST-UB and BP350ST-UL. Both mics give users a wide range of stereo image options with the mid-side capsule arrangement, making them ideal for professional broadcast, production and field recording applications.

The BP350ST-UB’s mic element can be configured using either of the 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-UL – a compact stereo shotgun mic with its cardioid element mounted on a 16 cm (6.3") interference tube that rejects off-axis noise to focus on distant sounds – is configured to mount securely to video cameras or support rigs (perfect for ENG and other on-the-move applications).

For both the BP350ST-UB and BP350ST-UL, the mid-side capsule configuration 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, 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.

BP350ST-UB configuration details:
The BP350ST-UB’s element is enclosed within the same compact body as Audio-Technica’s 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 A-T’s ATM350a mounts and mounting systems. The snap-on grille of the included boundary housing provides easy access to the mic, which locks 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 ¼" camera thread for use with a tripod or other device.

BP350ST-UL configuration details:
On the BP350ST-UL, the included AT8495 mount clip secures the mic to the power module, providing adjustable, modular placement around other peripherals; the power module can be mounted into a camera’s microphone mount or secured using third-party mounts.

The BP350ST-UB features a permanently attached 7.6 m (25') cable, where the BP350ST-UL has a permanently attached 30 cm (12") cable – each terminated with a TA5F connector that plugs into the power module. On both mics, a switch on the power module allows users to select an 80 Hz high-pass filter to suppress low-frequency noise, and both mics come with a 36 cm (14.2") TA5F to dual-XLR3-M stereo cable that’s suitable for connecting to a camera’s XLR inputs or to any traditional mic preamplifier with phantom power.BP350ST-UB features:

Innovative small-format stereo microphone with MS (mid-side) capsule configuration 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 a natural response, even at high SPLs, deliver ambient-friendly stereo from a fixed position. This is great for room tone, ambience, and unobtrusive stereo beds
Switch-selectable internally matrixed stereo modes (wide and narrow) and mid-side mode
Compact, low visibility, lightweight design
Rugged AT8490 5" gooseneck keeps microphone accurately positioned
AT8491UC universal clip-on mount provides safe and secure mounting to a host of surfaces via spring clip or ¼”-20 mount thread
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)
Polar pattern can be changed to hypercardioid by using the optional UE-H element or to line-cardioid by using the optional UE-UL element together with the AT8180 windscreen (all sold separately)
Includes a 36 cm (14.2") TA5F to dual-XLR3-M stereo output cable, AT8418 foam windscreen, and protective carrying case

BP350ST-UL features:

Innovative small-format stereo shotgun with MS (mid-side) capsule configuration engineered for broadcast, production and field recording
16 cm (6.3") camera-mount shotgun mic is perfect for professional journalists and vloggers who favor a run-and-gun style of filmmaking
Independent line-cardioid and figure-of-eight condenser elements
Excellent channel separation and a natural response, even at high SPLs with a narrower, more focused pickup and greater reach than the BP350ST-UB, optimized for isolating subjects
Switch-selectable internally matrixed stereo modes (wide and narrow) and mid-side mode
Compact lightweight modular configuration for use on versatile camera rigs
In-line AT8547 power module is equipped with a switchable 80 Hz high-pass filter
Includes a 36 cm (14.2") TA5F to dual-XLR3-M stereo output cable, AT8495 mount clip, AT8180 foam windscreen, and protective carrying case
Compatible with most ATM350a mounts and mounting systems (available separately)