The DT770 Pro is a pair of closed-back headphones. The sound signature is focused on the lower frequencies but with enough good qualities on the mids and highs to make these headphones fun to listen to. The DT770 Pro is well built and is very comfortable to use even for many hours of listening to music.
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Pro Great sound quality with deep and powerful bass
The bass is not overpowering. Instead, it is clean and controlled. The overall sound signature is focused on the bass but the mids and highs are in no way lacking either.
Pro Very comfortable because of the great quality materials on the headband and ear pads
These headphones are very comfortable to wear for long periods of listening to music. The ear pads feature velour material on the surface and soft foam inside. The headband has a leather outer layer with soft padding underneath. You can wear these headphones for hours without pain.
Pro Good soundstage for closed back headphones
The DT770 Pro, when amped properly, creates an open feeling sound stage that is very impressive for a headphone with a closed design.
Pro Impressive isolation and minimal sound leakage
These Beyerdynamics offer impressive sound isolation, keeping exterior noise out and your music in.
Pro Sits well over your ears
The DT770s are very comfortable to wear with deep and spacious ear pads. The velour material used on these are smooth and breathable, and the thick foam provides ample cushioning. These headphones can be worn for long periods of time with ease.
Con Headband isn't large enough to fit over a large head
While the Sennheisers have headbands which can be adjusted to easily fit a 'hatsize 62/63' head, the DT770 Pro and DT990 Pro headbands may need tweaking to make them work for larger head sizes.
Con May require extra power/amplification for optimal sound
Depending on which model is purchased (16/80/250-ohm), your system may have trouble powering them to get a full sound and comfortable volume. 16/80-ohm should work fine in most systems. If not, you may need an external amplifier.