McIntosh marketed a line of aftermarket car audio 20 years ago. Mostly amps…mono, stereo, and multichannel with built In configurable crossovers. They were very clean but didn’t deliver the grunt of Rockford or Xtant at that time. So they have experience. They now have Sonus Faber for the speakers, so I bet the system is quite good. No idea whose front end they are using. And yeah, road noise is the enemy of music listening in cars, but most people do it anyway.