Cap coupled outputs should only be blocking dc if done right. Some recapping them start messing with the cap values but should leave well enough behind. By inserting a cap, the damping factor is affected and lower than dc. By being lower, it comes nearer to or is in the range of a tube amp and this is the reason it may sound closer to a classic tube amp. Also,.why a transformer or autoformer coupled amp can exhibit a similar voicing. A typical listener generally finds the sound warmer. It is different than dc but, better or not depends on individual preference. I have found I generally prefer cap coupled amp voicing but, I grew up on tubes.
A lot about it still will boil down to how it mates with the speaker.