When the original PMA450 was introduced at Airventure 2014, PS Engineering brought IntelliAudio, True Dimensional Sound, to the general aviation community.

The new USB-C standard connector is non-directional and non-gendered, which means both ends are the same, and there is no up or down – making it very easy to connect in the cockpit. The power available also increases from 10 to 15 watts.
PMA450A has optional PS Streamer Bluetooth module for streaming cockpit audio signals that can include just the radios or everything the pilot hears, to a device such as a compatible video camera capturing the whole flight experience in sight and sound.
The PMA450A adds an independent Bluetooth music input for distribution. Now, there are three independent music sources that can be distributed to anyone in the aircraft. With these advancements, the pilot, copilot, and passengers all can share or listen independently to the music of their choice, company officials note.
Another intercom function is the “copilot as passenger” mode, which treats the intercom station at the copilot seat like a passenger for music distribution and radio communication.
List price of the PMA450A is $2,595.