When I had my 13 Volt, it was equipped with the Bose energy efficient system. It provided pretty good audio for a car system. Test drove a 17 Volt with the Bose audio, brought my USB thumb drive, and to me, it sounded a little hollow. In my ELR, it's another Bose system, but the big difference is in the total number of speakers, size of the sub, amplification, and insulation of the cabin. It provides low subsonic frequencies, bass that you can feel, like in the Timberlake song Suit and Tie, or Goldfrapp's Strict Machine. Music detail and separation are much better than the system in the Volt. No noticeable distortion. On the other hand, the Bose Panaray system in the new CT6 is actually very good - had a chance to audition it at a Cadillac event in Cleveland a couple of months ago. One of these days, I'd like to sample the ELS audio system in an Acura NSX - I hear it's the bomb.
Goldfrapp - Strict Machine
https://youtu.be/YeawPUpTHJA
Goldfrapp - Strict Machine
https://youtu.be/YeawPUpTHJA