back button black v05

Industry's First ½

Industry's First ½" Prepolarized Low Noise Microphone

26 January 2016
6.5 dBA capability and operates on ICP® power

PCB Piezotronics, Inc.: A new 1/2" microphone and preamplifier system, model 378A04, from PCB Piezotronics, Inc. enables test engineers to measure extremely low sound pressure levels in a cost effective, prepolarized (0V) package. The 378A04, is a free-field microphone that measures to 6.5 dBA (5.5 dBA typical) and is ideal for measurements commonly made in computer fan and disk drive tests, appliance noise, electric car sound quality, environmental noise, cabin noise and anechoic chamber qualification. A built-in filter is custom matched to each microphone ensuring that the sensitivity is stable and accurate between 10 Hz and 16 kHz.

This industry exclusive sensor is used with data acquisition systems that provide 4-20 mA of constant current. Prior to the release of the 378A04, engineers were forced to use high-cost, 7-pin cables and 200V power supplies to measure below 15 dBA. This microphone system uses common coaxial cables with BNC connectors and can be shared with other ICP® compatible products including: accelerometers, force and pressure sensors. Portability and interchangeability with other sensors minimizes test set-up time and reduces the cost per-channel. 

PCB® carries a full complement of prepolarized and externally polarized condenser microphones and preamplifiers. The 378A04 microphone system is A2LA and ILAC accredited and CE marked. Like all PCB® microphone products, it comes with a 5 year warranty and "Total Customer Satisfaction" guarantee.

.Model 378A04 is a stock item and available for immediate shipment. For additional information please visit or contact Mark Valentino, Product Manager, at (866) 816-8892 or email at .

About PCB Piezotronics, Inc.

PCB Piezotronics is a global manufacturer of  microphones, vibration, pressure, force, torque, load, and strain sensors, as well as the pioneer of ICP® technology. This instrumentation is used for test, measurement, monitoring, and control requirements in automotive, aerospace, industrial, R&D, military, educational, commercial, OEM applications, and more.  With a customer support team of more than 30 Customer Service Representatives and Application Engineers, PCB proudly stands behind their products with the services you value most, including 24-hour technical support, a global distribution network, a best in class warranty and Total Customer Satisfaction. Our Platinum Products program is one way PCB ensures fast delivery with over 10,000 sensors in stock and covered by a Lifetime Warranty.  Visit us at for more details, including our Terms and Conditions.

# # #

PCB® and ICP® are registered trademarks of PCB Group, Inc.

  • PCB Piezotronics, Inc.
    3425 Walden Ave.
    Depew, New York 14043
    United States / America
    Tel.: 716-684-0001
    Fax: 716-684-0987
    Web :
  • company website button
  • all entries button

back button black v05