I havent heard the CAL1 but my CAL2 is warm and bassy (not bass cannons). It is quite comfortable but I've changed the pads to HM5s which make them sound much better and much more comfy. I've also tried the HM5 velours but a lot of bass gets lost using them so I'm now back to the HM5 pleathers. I'm not sure what the original pads weren't but the HM5 pads just made them better, they were thicker and pushed the cans out a bit so it improved the soundstage without any sacrificing any bass. Plus the isolation improved
Sorry I didnt updated. Decided to get HM5 and its fantastic. Love the sound and comfort.