With Garmin’s popular GMA 340 reaching the end of its service life (Garmin’s Service Advisory 21115, rev. C spells it out), there’s a brisk market for slide-in replacements. Garmin’s GMA 345 and PS Engineering’s PMA450C do just that, while stepping up the audio control capability to a high level.
For the customer who doesn’t know better, we hear that many shops fall short in not even offering customers the PS Engineering option, let alone a good demo—which we think shortchanges the buying decision. Since these units perform so many functions, you need to try them before you buy them.