PS Engineering PMA450B Audio Panel

pma 450b audio panel

PS Engineering PMA450B Audio Panel: A Complete Guide for Pilots and Owners

If you've been researching audio panels for your cockpit upgrade, you've probably landed on the PS Engineering PMA450B more than once — and for good reason. This audio panel represents a meaningful leap forward in cockpit audio control, intercom capability, and Bluetooth connectivity for general aviation pilots. At Premier Aviation Tucson, we carry and install the PMA450B at our facility inside Tucson International Airport. This guide covers everything you need to know before you buy.

Ready to skip ahead? Visit our PMA450B Audio Panel page to see the unit and get in touch with our team.

What Is the PS Engineering PMA450B?

The PMA450B is a TSO-certified audio selector panel and intercom system for certified aircraft, made by PS Engineering — a manufacturer well known among GA pilots for building audio panels that actually work the way a pilot's brain works. The "B" in PMA450B refers to the enhanced Bluetooth platform that distinguishes this model from its predecessor, the PMA450A.

The PMA450B is built around a Digital Signal Processor (DSP) core and incorporates licensed, patented audio technology originally developed for U.S. Air Force fighter pilots — people who routinely manage multiple simultaneous audio streams under pressure. That same technology, called IntelliAudio®, is now standard equipment on a panel you can put in your Cessna, Piper, or helicopter.

Key Features of the PMA450B

IntelliAudio® True Dimensional Sound

This is the feature that sets the PMA450B apart from conventional audio panels. IntelliAudio® uses USAF-patented "Multi-Talker" technology (U.S. Patent #7,391,877) to spatially position Com 1 and Com 2 audio in your headset — think of Com 1 at the 10 o'clock position and Com 2 at the 2 o'clock position. Instead of two voices blending into one confusing stream, your brain can naturally separate them, the same way you tune into one conversation at a noisy party while filtering out others. For busy pattern work, IFR approaches, or multi-frequency operations, this is a real workload reducer.

Note: IntelliAudio® requires stereo headsets operating in stereo mode to function as intended.

Dual Independent Bluetooth® Modules

Most audio panels offer one Bluetooth connection. The PMA450B has two completely independent Bluetooth® modules — more than any other audio panel on the market. What does that actually mean for you? It means you can simultaneously stream audio from your iPad running ForeFlight, take a phone call to ATC for your IFR clearance, and have a second device connected in reserve. You can also stream cockpit audio to a compatible Bluetooth-enabled camera for flight recording. The PMA450B handles telephone functions entirely from the front panel, including caller ID display, volume, answer, and hang-up — without reaching for your phone.

3-Softkey Interface with OLED Display

The PMA450B uses a 3-softkey user interface paired with an OLED graphics display. OLED means the panel is readable from wide angles in both bright sunlight and low-light cockpit conditions. The softkey layout is intuitive enough that PS Engineering's own documentation notes pilots can access all features without ever opening the user manual. That's a reasonable claim — once you spend a few minutes with the panel, it just makes sense.

flightmate® Integrated Alert System

The PMA450B includes flightmate®, an internal digital recording system that functions as both a custom audio alert creator and a continuous loop recorder for primary radio receptions. Pilots can record personalized audio alerts triggered by discrete inputs from avionics or engine instruments — so instead of a generic tone when a condition trips, you hear your own voice saying what that condition is. Flightmate also allows you to build custom audio checklists. This is a meaningful safety and workflow tool, not a gimmick.

Important installation note: If you're upgrading from a Garmin GMA340/GMA345 or PMA8000 series panel, additional wiring is required to implement flightmate®. Our technicians at Premier Aviation Tucson handle this as part of a complete installation.

IntelliVox® 6-Place Intercom

The PMA450B includes a 6-place, voice-activated (VOX) intercom using PS Engineering's patented IntelliVox® circuitry. IntelliVox® eliminates manual squelch adjustment — it self-calibrates to the ambient noise environment. Intercom modes include Pilot Isolate, All, and Crew, with two independent stereo music inputs featuring SoftMute™ (which automatically ducks music volume when intercom or radio audio is active). Volume control is handled via two concentric front-panel knobs.

USB-C Charging Port — 15 Watts

The PMA450B includes a USB-C port rated at 15 watts with auto-protection against electrical shorts. This is 33% more output than the previous generation — enough to keep an iPad at full brightness and charge simultaneously during flight.

Split Mode Transmit

In Split Mode, the PMA450B allows the pilot to transmit on Com 1 while the copilot independently transmits on Com 2. Useful for multi-crew operations where both positions need simultaneous radio access on separate frequencies.

Fail-Safe Mode

If power is lost for any reason, the PMA450B automatically connects the pilot headphone and microphone directly to Com 1. This fail-safe behavior is hardwired — no programming required, no configuration to remember. You maintain radio communication even if the panel itself goes dark.

Garmin GMA340 Plug-and-Play Compatibility

If your aircraft currently runs a Garmin GMA340, the PMA450B is plug-and-play compatible with the existing wire harness and tray. The upgrade is straightforward: remove the GMA340, install the PMA450B, make a logbook entry. No new wiring, no new tray. This significantly reduces the labor cost and downtime for pilots upgrading from the GMA340.

Com and Receiver Switching

The PMA450B switches two transceivers (Com 1 and Com 2) and six receivers, including Nav 1, Nav 2, Marker Beacon, and three additional labeled inputs that can accommodate ADF, DME, Aux, or other navigation audio sources. Four unswitched inputs are available for traffic alert systems, EGPWS, autopilot disconnect, or radar altimeter warning — these remain active regardless of panel switching state.

PMA450B vs. PMA450A: What's the Difference?

If you're comparing the PMA450B to the PMA450A, the core distinction is Bluetooth architecture. The PMA450A offers Bluetooth connectivity, but the PMA450B elevates this with two completely independent Bluetooth® modules — allowing simultaneous connections to multiple devices. The PMA450B also includes the PS Streamer™ option, which streams audio to external Bluetooth-enabled devices like compatible GoPro cameras. Both panels share the IntelliAudio® system, OLED display, IntelliVox® intercom, and flightmate® integration.

If you fly with a tablet, use ForeFlight actively, want to record flights, or regularly use your phone in the cockpit, the PMA450B's dual-Bluetooth architecture is the practical choice. Premier Aviation Tucson carries both models — our team can walk you through which configuration fits your avionics stack and flying habits. You can also compare models directly on our PMA450A Audio Panel page and our PMA450B Audio Panel page.

Who Is the PMA450B For?

The PMA450B is a strong fit for a wide range of pilots and aircraft:

  • IFR pilots who manage multiple radio frequencies and need cleaner audio separation
  • Cross-country and long-haul pilots who use ForeFlight, Bluetooth audio, and USB-dependent devices throughout a flight
  • Multi-crew operations where Split Mode transmit capability matters
  • Flight training operations using the 6-place intercom for instructor/student communication alongside passengers
  • Owners upgrading from a Garmin GMA340 looking for a drop-in replacement with substantially more capability
  • Pilots who want to record flights to a Bluetooth-enabled camera without separate audio interfaces

It is TSO-certified for certified aircraft. If you're flying an experimental or homebuilt, PS Engineering offers separate product lines for that category.

PMA450B Installation at Premier Aviation Tucson

Buying an audio panel is step one. Having it installed correctly is what determines whether you get the full benefit of everything the PMA450B offers — or spend the next year troubleshooting intermittent Bluetooth drops and audio artifacts because something wasn't wired or configured properly.

At Premier Aviation Tucson, our team installs the PMA450B with attention to the details that matter: proper harness fabrication, correct intercom gain calibration, flightmate® wiring (where applicable), and a thorough post-installation checkout before the aircraft leaves our shop. PS Engineering requires that the wiring harness be made or installed by an authorized PS Engineering dealer for the factory warranty to remain valid — we meet that requirement.

We provide a detailed estimate upfront covering the full scope of the installation. If anything unexpected comes up during the process — which is occasionally the case when retrofitting older airframes — we contact you before proceeding. No surprises on the invoice.

To learn more or get pricing on the PMA450B with installation at our Tucson facility, visit our PMA450B Audio Panel page or call us at 888-960-4288 .

We also offer a Veteran Discount and charge zero fees on credit card payments — ask about both when you call.

PMA450B in Context: The PS Engineering Audio Panel Lineup

PS Engineering builds several audio panels for the GA market. Here's a quick orientation of where the PMA450B fits in the product family:

  • PAC45 / PAC45D / PAC45J — Compact digital audio control systems for simpler installations. See our PAC45 series page.
  • PMA450A — Feature-rich DSP audio panel with Bluetooth and IntelliAudio®. See our PMA450A page.
  • PMA450B — The dual-Bluetooth upgrade over the 450A with PS Streamer™ and full phone control. Our most popular PS Engineering recommendation for pilots with active tablet and phone integration. See our PMA450B page.
  • PMA450C — The latest generation in the 450 series with additional capabilities. See our PMA450C page.
  • PMA8000G — A larger-format panel suited to more complex avionics installations. See our PMA8000G page.

Not sure which model is right for your aircraft and avionics configuration? Our team can help you evaluate the options without any pressure to go bigger than your setup actually needs.

Frequently Asked Questions: PS Engineering PMA450B

What aircraft is the PMA450B compatible with?

The PMA450B is TSO-certified for use in certified general aviation aircraft. It is compatible with a wide range of fixed-wing singles, twins, and rotary-wing aircraft. It is plug-and-play compatible with the Garmin GMA340's existing wiring harness and tray, making it a common upgrade choice for aircraft originally equipped with that panel.

Does the PMA450B require new wiring when installed?

If you're replacing a Garmin GMA340, no new wiring is required — the PMA450B drops into the existing harness and tray. However, if you want to use the flightmate® alert system and are upgrading from a GMA340, GMA345, or PMA8000 series panel, additional wiring is needed for the discrete inputs. Our installation team assesses the existing harness condition during every install and addresses any wiring needs as part of the job.

Does the PMA450B work with ForeFlight?

Yes. The PMA450B can receive audio alerts from ForeFlight (and similar EFB apps) via its Bluetooth® connection. With dual Bluetooth modules, you can have ForeFlight audio connected on one module while a second device — such as a phone or camera — is connected simultaneously on the other.

What is IntelliAudio® and do I need stereo headsets to use it?

IntelliAudio® is PS Engineering's implementation of USAF-licensed dimensional audio technology. It spatially positions Com 1 and Com 2 audio in your headset so your brain can separate them the way it separates voices in a room. Yes — you must use stereo headsets operating in stereo mode for IntelliAudio® to work. Mono headsets will receive all audio, but without the spatial separation effect.

What is flightmate® and is it included standard?

flightmate® comes standard with the PMA450B. It is an integrated audio alert and recording system that lets pilots create custom spoken audio alerts triggered by discrete inputs from other avionics or instruments, build audio checklists, and continuously record primary radio audio on a loop. It is not an add-on — it is built into every PMA450B unit.

How do I get the PMA450B installed at Premier Aviation Tucson?

Visit our PMA450B Audio Panel page for product details, then call us at 888-960-4288 to discuss your aircraft and get a quote. We're located at 1951 E Airport Dr, Building 2, Tucson, AZ 85756, inside Tucson International Airport.

Is there a warranty on the PMA450B?

PS Engineering provides a factory warranty on the PMA450B. The warranty requires that the wiring harness be made or installed by an authorized PS Engineering dealer. Premier Aviation Tucson meets this requirement, so your factory warranty is intact when we do the installation.

How does the PMA450B compare to the PMA450C?

The PMA450C is the newest generation in the PMA450 series and includes additional features and refinements beyond the PMA450B. If you're trying to decide between the two, our team can walk you through the specific differences relative to your aircraft and use case. See our PMA450C page for details on the newest model.

Premier Aviation Tucson is an authorized PS Engineering dealer and FAA-certified avionics installation facility located at Tucson International Airport. We sell and install the full PS Engineering audio panel lineup, including the PMA450B, PMA450A, PMA450C, PMA8000G, and PAC45 series. Call 888-960-4288 or visit us at 1951 E Airport Dr, Building 2, Tucson, AZ 85756.

The body content of your post goes here. To edit this text, click on it and delete this default text and start typing your own or paste your own from a different source.