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PMA450B Audio Panel: Impressive Feature Set

The panel will come on with the master avionics power, but the small rotary knob serves double duty as a power control (its a push-in-and-hold switch to eliminate inadvertent power cycles) and pilot/copilot intercom volume. The larger knob is for passenger volume. Green LED bars to the left of the knobs illuminate when you turn the knobs, showing relative volume. The volume controls are linear throughout the range and there was more than enough gain through our Bose A20 headset.

Aviation Consumer Staff
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PS Engineering says the features and functions in its latest PMA450B flagship audio panel are the result of its 33 years concentrating on nothing else but designing aircraft audio controllers. Plus, it listened to what pilots (and installers) want in a modern system and put it all together to not necessarily create a revolutionary panel, but an evolutionary one.

As we’ve said in previous reviews, Tennessee-based PS Engineering is not one to let its products go stale. This philosophy comes across loud and clear in the PMA450B, an advanced version of its original PMA450. We put the system on our evaluation bench, cranked up the headsets and put it through the paces.

Aviation Consumer Staff