Cobham’s Universal Interface Amplifier provides multi-purpose amplification and switching functions for varying radio, microphone, and custom audio interface needs.

Cobham's Universal Interface Amplifier model AA34-300 is a mobile/FM radio audio interface.  Features include floating key lines, RX and sidetone amplifier, floating audio lines in and out, and microphone amplifier with adjustable output.


  1. Selectable functions and levels
  2. Weight: 0.63 lb / 0.18 kg
  3. Power: 0.07A / 14/28 Vdc
  4. TSO C50c Compliance: DO160C
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