Does replacing the HK with an aftermarket stereo take away the use of the intercom system? If so, is there an aftermarket stereo besides the Jensen that will allow the intercom to still be used?

 

When I replaced my HU, I lost the intercom function. I'm not sure, if there's an aftermarket product that retains that function, besides the aforementioned Jensen. I never used it, so it wasn't a deal breaker to me...