aeberbachYep, the 990s are completely different. The 880s are more for studio use (mixing, mastering, etc.) and so they have a really flat frequency response. To my ear, the 880s sound completely flat and sterile, which is great for mixing, but also makes most songs sound a bit boring compared to headphones that hype the bass and treble response.
aeberbachThey are somewhat different. For me, the beyer spike is physically painful on the DT990. On the DT880, it's merely fatiguing and tinnitus-inducing. Both are more exciting than the HD6X0 (imo, anyway).
ProRulesBeyerdynamic's DT family varies greatly, and the bigger number doesn't directly translate to better sound or build:
For example,
DT770 is build to have close-back and a flat sound signature.
DT880 is semi-open and has a balanced sound signature.
DT990 is semi-open and has a sound signature that puts emphasis on highs.
You can pick for yourselves from those 3, neither one of those has lower build quality over the others.
I like the sound signature of DT880, as it translates well into my listening style.
DT990 is a different story, if you like it, IEMs will be Noble audio.
DT770 are famous in music fields, same goes for Sony MDR7506 and Sennheiser HD280, flat sound is the way to go.
Small note, if you really really liked DT770's noise profile but you're still looking for something else, try the DT150.
SaemonYeah i know, but DT880s are for my taste a little too "boring" as they are too neutral (much better for mixing tho).
The DT990s are more "fun" lets say.
Ofc everyone to his taste.
sghoundwhat? the materials are exactly the same, full metal except the chrome ring which is plastic, but its also plastic on the vanilla beyerdynamic's headphones, the ring there is also plastic.