Jessica Reed is a writer and editor with AIN. She joined the team in the fall of 2023 after two years covering the aviation industry at Avionics International. She earned her bachelor&#039;s degree in English (Writing &amp; Rhetoric) from Pepperdine University. Her hometown is St. Louis, Missouri, and she since has resided in Santa Barbara, California, and Brooklyn, New York, among others. She is currently based in Philadelphia.

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PS Engineering unveiled two audio panel solutions yesterday at the Aircraft Electronics Association’s 2025 convention in Phoenix. This expands its product lineup with systems designed to address integration challenges in business aircraft.
The Tennessee-based company has received FAA technical standard order (TSO) approval for its PAC37 digital audio panel, designed as a direct replacement for aging Baker B1045 audio systems in legacy business jets. Simultaneously, PS Engineering introduced the CTL-G Comm Expander audio system, which it said facilitates the addition of supplementary transceivers to aircraft with factory-installed audio systems.
“Traditionally when upgrading the primary avionics suite, the factory audio system has been off limits due to the complexity, labor, and cost burden,” according to PS Engineering CEO Greg Ledbetter. “With the PAC37, this is no longer the case because it’s truly a plug-and-play solution for Baker B1045 audio systems.”
During the show's new product introductions session on Tuesday, PS Engineering v-p of engineering Peter Campbell&nbsp;emphasized the PAC37’s ease of installation. “If the existing wiring is in good condition, you can simply unplug the old system and plug this in,” he explained.
Several modern audio management capabilities beyond the original Baker systems are incorporated in the PAC37, including PS Engineering’s IntelliVox auto-squelch technology alongside traditional hot mic and push-to-talk intercom modes. The system also features Bluetooth connectivity for audio streaming and telephone integration, support for stereo headsets enabling IntelliAudio dimensional sound technology, and an internally fused automatic noise reduction headset interface.
<h2>Adding Auxiliary Transceivers</h2>
The CTL-G Comm Expander facilitates the addition of auxiliary transceivers to existing audio systems. “Adding additional transceivers (FM/TAC) to an OEM aircraft can require removal and replacement of the factory audio system and that isn’t an easy task," said Ledbetter. "Normally, the labor associated is a deterrent for most avionics shops, but with the CTL-G audio system, this anxiety will be drastically reduced.”&nbsp;
Campbell highlighted the system’s capabilities: “If you need to add additional radios to an existing audio system, this makes the job easy. The system lets you add six radios with individual and master volume controls.”
According to PS Engineering, the CTL-G equipment incorporates technology from its PAC45 series and works with any factory audio panel without affecting existing integrated wiring. Featuring a remote-mount HUB45R unit, the system supports configurations for single or dual control heads, accommodating both single and dual audio panel installations.
Technical capabilities include independent volume controls, MultiTalker dimensional sound, IntelliVox intercom technology, Bluetooth connectivity, and a USB-C 15W charger. The system can also support a separate cabin mission control head for specialized operations.
PS Engineering expects the CTL-G audio system to receive FAA TSO approval in the second quarter, with initial shipments to follow shortly thereafter. It is already processing orders for the PAC37 with initial shipments beginning next month.

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