Pilot Communications USA PA-400ST 4-Line Stereo Intercom System with Phone Integration - Perfect for Offices, Schools, and Multi-Room Communication

I had one of these for my plane and loved it. Cued my music on take-off, intercom mutes music for any communications, could make or receive a call with my headset in flight if needed. Having music, safely, in an airplane made flying twice as enjoyable!! I did have one issue with my unit after a couple years in the Florida heat - called tech support, sent it in, they sent me a brand new one. Would definitely buy again. Note: needs PTT switches and correct input line for your phone to the intercom.