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Unlike most X/Y stereo microphones where the capsules form a 90° stereo image, the BP4025 has ingenious arrangement of its large capsules for stereo more "realistic" 120° image. The two capsules are mounted back-to-back on the same electronic circuit.
This is a unique configuration of coincident large diaphragm capsules for impeccable sound quality and exceptionally low noise level. The audio reproduction - thanks to the excellent channel separation - is natural and powerful to give the listener the impression of being there when the audio was recorded.
The BP4025 is equipped with large membrane coincident capsules. Mounted in parallel to the microphone head, the shared electronic circuit guarantees that the recordings of the two membranes are processed at exactly the same time from the same source, for the perfect stereo image.
Thanks to the excellent channel separation on the BP4025, the audio reproduction is natural and powerful to give the listener the impression of being there when the audio was recorded.
Robust all metal construction, ideal for use in professional broadcast environments.
The BP4025's large diaphragms allow it to have very low self noise of just 14 dB. They also accept strong sound pressure levels (up to 155 dB).
The BP4025 has two membranes of Ø24.3mm in polyphenylene sulfide (PPS), a thermoplastic material known for its thermal and directional stability.
The 80Hz low-cut filter significantly reduces handling noise and wind noise, during external use. If necessary, the BP4025 also has a high-quality windshield.
The BP4025 capsules are positioned in an X/Y, back to back configuration, with a perfect angle of 120°. This gives the construction an "ice cream cone" like appearance.
| Element | Fixed-charge back plate permanently polarized condenser |
| Polar Pattern | X/Y Stereo |
| Frequency Response | 20 - 17,000 Hz |
| Open Circuit Sensitivity | -32 dB (25.1 mV) re 1V at 1 Pa |
| Impedance | 170 ohms |
| Maximum Input Sound Level | 145 dB SPL, 1 kHz at 1% T.H.D.; 155 dB SPL, with 10 dB pad (nominal) |
| Channel Balance | < 2.5 dB |
| Low Frequency Roll Off | 80 Hz, 12 dB/octave |
| Switches | Flat, roll-off; 10 dB pad (nominal) |
| Dynamic Range | 131 dB, 1 kHz at Max SPL |
| Signal-to-Noise Ratio | 80 dB, 1 kHz at 1 Pa |
| Phantom Power Requirements | 11-52V DC, 7 mA typical (both channels total) |
| Weight | 269 g (9.5 oz) |
| Dimensions | 186.0 mm (7.32") long, 47.6 mm (1.87") head diameter 21.0 mm (0.83") body diameter |
| Output Connector | Integral 5-pin XLRM-type |
| Cable | 5.0 m (16.5') long, 8 conductor, shielded, vinyl-jacketed stereo cable with 5-pin XLRF-type connector at microphone end and two 3-pin XLRM-type connectors at output end |
| Accessories Included | AT8405a stand clamp for 5/8"-27 threaded stands; windscreen; soft protective pouch |
| Name | Filetype | Filesize |
|---|---|---|
| BP4025 Specification Sheet |  PDF |
155 KB |
| BP4025 Polar Pattern |  JPG |
191 KB |
| BP4025 Frequency Response | JPG |
73 KB |
| BP4025 Declaration of Conformity | PDF |
77 KB |
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The BP4025 Large diaphragm X/Y microphone is covered by Audio-Technica’s European Warranty. This covers your product to be free of defects in materials and workmanship.
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Whether it’s on the boardroom table, the stage or in the studio, Audio-Technica products are trusted time and again by industry professionals looking for reliable, lovingly developed audio products for all budgets.
It’s Audio-Technica’s commitment to innovation, customer service and meticulous design that ensure professionals turn to us to provide solutions in conferencing, houses of worship, broadcasting, live sound, recording studios and beyond.
For over 50 years Audio-Technica has worked alongside leading figures in sports and music broadcast to develop and hone a range of products that deliver on the highest level.
Audio-Technica have developed and delivered products to power the Grammys, World Cup, Super Bowl, Commonwealth Games as well as every Summer and Winter Games from Atlanta 1996 to Sochi 2014.
Founded in 1962 by Hideo Matsushita, Audio-Technica positioned itself immediately as a leader in the manufacture and design of innovative audio products.
Its expertise in innovation quickly spread to various new fields and led to the development of tone arms, microphones and headphones. Audio-Technica soon became a benchmark in those fields. Making history.
A self-made man and audiophile, Hidéo Matsushita was the former Director of the Tokyo Museum of Modern Art. It all started in his workshop, with the hand crafting of stereo cartridges. 50 years later, Audio-Technica has become a global leader in audio innovation.
Humility, passion, creativity and expertise in sound are the core values behind Audio-Technica’s legacy, greatly inspired by its founder - whose imprint on the company’s philosophy is still felt today.
Audio-Technica’s passion for listening evolved in the 70’s, when it started designing headphones, building upon a legacy in innovation, meticulous engineering and artistic design.
Today, Audio-Technica’s audio products have become globally synonymous with consistently high sonic performance paired with impeccable build construction and artistic design.
All Audio-Technica products come with a two year warranty as standard meaning you can enjoy your product safe in the knowledge that you’re covered.
All Audio-Technica products purchased from Audio-Technica Europe are guaranteed for two years from the date of purchase to be free of defects in materials and workmanship. In the event of such defect, the product will be repaired or replaced without charge*.
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