David Clark M-7A Electret Noise-Cancelling Microphone | 09168P-33

David Clark M-7A Amplified Electret Microphone | Replacement 09168P-33

The David Clark M-7A is a high-performance amplified electret microphone with advanced noise-cancelling capabilities, designed to replace carbon and amplified dynamic microphones. It delivers crisp, clear voice transmission ideal for aviation communications.

Key Features & Benefits

• Noise-cancelling electret element – Minimizes cockpit background noise for clear communication.
• Replaces older microphone types – Compatible replacement for carbon and amplified dynamic microphones.
• Amplified electret technology – Provides enhanced voice clarity and intelligibility.
• DC bias voltage required – Operates only with radios supplying DC bias voltage (common in modern systems).
• Reliable OEM quality – Backed by David Clark’s reputation for durable, flight-tested headset components.
• Recommended professional adjustment – Radio master gain may need tuning by a qualified avionics technician.

Detailed Product Description

The 09168P-33 M-7A Microphone from David Clark is a sophisticated, amplified electret microphone engineered for aviation use. Built to replace legacy carbon and dynamic microphones, the M-7A excels in high-noise environments thanks to its electret-based noise-cancelling element. It requires a DC bias voltage—standard in most modern aircraft communication equipment. For optimal performance, users should confirm compatibility with their avionics setup and consider a technician adjustment of the radio master gain control.

This microphone is widely used in general aviation, helicopters, and commercial aircraft, and is ideal for pilots upgrading existing headsets or replacing aging microphone components.

Technical Specifications