BananaOoyoo
1000+ Head-Fier
I demoed Equinox, the custom version of Atlas, and found the bass overwhelming. According to Campfire Equinox should have flatter response than Atlas and better treble extension. But i found the opposite. All i can say is burn in really make a difference for a dd driver. I used Vega in the past and played for more than 1000 hours, it's really not the same beast u demoed with limited hour count, so is Atlas.
I've found that custom versions of IEMs generally have increased bass (b/c of improved seal), so depending on how much Campfire compensated for that, and depending on how good the individual's fit for both the custom and universal IEMs is, there could very well be differing opinions on bass quantity.