When comparing Audiotechnica ATH-AD900x vs beyerdynamic DT770 PRO, the Slant community recommends beyerdynamic DT770 PRO for most people. In the question“What are the best over-ear headphones under $200?” beyerdynamic DT770 PRO is ranked 3rd while Audiotechnica ATH-AD900x is ranked 18th. The most important reason people chose beyerdynamic DT770 PRO is:
These Beyerdynamics offer impressive sound isolation, keeping exterior noise out and your music in.
Specs
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Pros
Pro Wide soundstage excellent for gaming or movies
Pro Works well with or without a headphone amp
Pro Extremely light and comfortable once properly adjusted on the head
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.
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 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.
Cons
Con Open-back heaphones
This is a pro or a con. This results in very good soundstage, but people around you may be able to hear whatever you're listening to so it might not be the best for use in public transportation.
Con Bass lacks some body and extension
Con 3D-Wings adjustment system that can be problematic
Con Not removable wire
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.