Class A Preamp Design With Transformer Output Condenser Microphone
Condenser microphone with Class A preamp design。 Condenser microphone with transformer output 。 Latest design condenser microphone
Product Introduction
797 AUDIO is a large-scale and professional class a preamp design with transformer output condenser microphone manufacturer and supplier in China. We are equipped with a professional factory. Welcome to wholesale the customized microphone specially designed for 797 audio.
Patented industrial design.
Class A preamp design with transformer output.
Lowest acoustic coloration for faithfully sound preproduction.
Switchable -10 dB pre-attenuation and low FQ roll-off.
Suitable for vocal , instruments and all other professional recordiong applications.
| Speciations | |
| Polar Pattern | Cardioid |
| Frequency Range(Hz) | 20-20,000 |
| Sensitivity(dB)(1000Hz) | -31 |
| Output Impedance(ohm)(1000Hz) | ≤200 |
| Max.SPL(dB)(1%THD@1kHz) | 117 |
| Equivalent Noise Level(dB) | 12 |
| Power Requirements | 48V DC phantom power |
| Added Function | -10dB; Low-Roll off |
| Size(mm) | Φ52*174 |


Who we are:
Beijing 797 Audio Co. Ltd was founded in 1953 as an electric-acoustic manufacturer in China mainland, we are now a large-scale microphone factory in China for both domestic marketing and microphone export. As a microphone manufacturer with a long history in China, most China national microphone standards are formulated by Beijing 797.
Our head office locate in Beijing downtown, about 20km away from PEK airport. Our own factory locate in Beijing suburb, about 70km away from our head office.
797 do OEM/ODM business in foreign marketing with many famous audio companies, most successful microphones you see or use are produced in our factory.
What we can provide:
With more than 60 years in electric-acoustic field, 797 have full set of product lines contain studio condenser microphones, USB microphones, Lightning microphones, dynamic microphones, electret microphones, measurement microphones, shotgun and boundary microphones, Karaoke microphones for smartphones, loudspeaker system and loudspeaker units, power amplifier and pre-amplifier etc. Besides finished products, we also supply microphone capsules, microphone parts, microphone accessories and packaging materials.
Our advantages:
• City class technique center, affirmed by the Beijing Economic and Trade Committee.
• Complete set of B&K electro-acoustic measuring instruments.
• Equipped with a large-scale anechoic chamber in Asia.
• 52 engineers, including electric engineer, mechanical engineer, acoustic engineer, production engineer, equipment engineer.
• 49 patents on microphones and loudspeakers.
• Well-developed industrial chain including die-casting, machining, painting, printing, laser engraving, products assembly and testing.
• Mature production technology and strict QC control can ensure quality, stability and best consistency.
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