Randy, We use the intercom system in the race boat. We do not have a stereo hooked up so I cannot really answer that question. We hooked up our VHF radio and everything works perfectly. I can testify that when you use the throat mic setup there is no wind noise and it transmits across the VHF crystal clear. IMHO for the $$$ and quality you can't buy a better intercom system.
Regards, Keith McCue