Updates. 9/6/19. 9/23/19. Link/Article cleanup. 2,529 word post, approx 4-5 min. read Hey there friend, and Welcome aboard!! The differences between the DT 990 vs. DT 880 are pretty profound. Well, let’s not get carried away, they’re just headphones but you should definitely know what each is primarily used for before purchase. First let’s check