I agree that the bass isn't tight enough (and IMO, not strong enough!).
My brother-in-law had a subwoofer installed in the spare tire compartment of his R1S. It has a dedicated amp, and power control knob discreetly installed on the driver's seat trim on the front right edge. He just reaches...
Picked up my R1T on June 11; audio worked fine for a couple days, then third day, couldn't get any music. All other sounds through speakers were fine (turn indicator sounds, nav directions, etc.). Called the support line and they had me do an infotainment reset, and that solved my problem...