I got my hands on a Helix demo switch that allows me to switch between "Original" and "Helix" sound. It's almost always in Helix mode, but I thought the novelty of hearing a before and after sample would be cool, even if only briefly. I don't have it installed yet, but I did plug it in to have a listen.
I shared the difference with a coworker. I started with it in the "Original" position. "That actually sounds okay," he said. Then I switched it to "Helix." "Oh, WOW! That's a big difference," he immediately exclaimed. He became more and more impressed as the song continued and we switched back and forth between the modes. I was playing Devin Townsend's "Higher," which has a good range between bass and acoustic highs. Of course, my Rockford Fosgate subwoofer reached lows that cannot be touched by the factory speakers.
As we exited the car, he finished by saying
"I feel like something's been missing from my life." That was funny!