Please Note: Flight Sounds will be temporarily closed from 22nd September to 1st October 2023. Any orders received during this period will be shipped on 2nd October 2023.

DUAL-HM Specifications

Flight Sounds DUAL-HM (Helicopter | Military)


  • Volume and squelch (background noise elimination) controls on two separate channels
  • Separate external audio volume control (for radio volume simulation)
  • Electrical Power Switch with LED indicator
  • Zero delay voice feedback (intercom) feature
  • Aesthetic, robust, anodised aluminium enclosure
  • Upgraded control knobs (Compared with previous DUAL models)
  • Intercom Link feature to enable connection with a DUALPro intercom


  • USB 1.1, 2.0 and 3.0 compatible
  • Plug and Play with Windows; macOS; Linux
  • Uses a standard Aviation headset socket (Compatible with U-174/U connectors)
  • Compatible with elecret microphones types and low impedance dynamic microphone types (eg: 5 ohms)
  • Powers microphone bias (+12V) from USB port (no external power needed)
  • Output frequency response (20Hz-20KHz)
  • Product Weight: 516g
  • Total Packaged Weight: 806g
  • Size: 106mm(L), 166mm(W), 55mm(H)
  • Total Packaged Size: 192mm(L), 147mm(W), 89mm(H)


User Manual: