Beyerdynamic DT 770 Headphones Review - Beyerdynamic DT 990 Comparison

	Beyerdynamic DT 990 Comparison
• Very similar in all areas. • DT 770s have open-backed design, HD 650s have closed backs. • DT 770s are less expensive.
	Usability	Page 7 of 12	Sennheiser HD 650 Comparison

Design

There really isn't a lot of difference between these two headphones, which is to be expected since they're in the same series. The one major design difference is the closed-back vs. open-backed design.

Aesthetics
DT 770	Beyerdynamic DT 990

Sound Quality

The DT 770s had a slightly worse frequency response than the DT 990s. The two are very similar, but the DT 770s have a much sharper drop than the DT 990s.

Frequency Response
DT 770	Beyerdynamic DT 990

Neither set of headphones have a significant amount of distortion.

Distortion
DT 770	Beyerdynamic DT 990

The DT 990s have a much more even tracking result.

Tracking
DT 770	Beyerdynamic DT 990

Isolation

The DT 770s, with their closed-back design, have better isolation than the DT 990s.

Isolation
DT 770	Beyerdynamic DT 990

Comfort

Both headphones are almost the same in terms of comfort: both are comfortable initially, but get uncomfortable after a few hours.

Wear
DT 770	Beyerdynamic DT 990

Verdict

There really isn't that much difference between the DT 770s and DT 990s. The DT 990s have better sound quality overall, but the DT 770s isolate better. For more users, the DT 770s will be the better value.