Beyerdynamic DT 770

Design

The DT 770s have closed backs while the HD 650s are open. This is the main difference between the two. Otherwise, both are pretty plain looking and are put together well. Because of the grating on the back of the HD 650s, they end up with a more unique look than the DT 770s, which may or may not be a good thing.

Beyerdynamic DT 770	Sennheiser HD 650

Frequency Response

The DT 770s’ dip at the 4kHz mark is a slightly more noticeable foible, compared to the HD 650s gradual descent.

Beyerdynamic DT 770	Sennheiser HD 650

Distortion

Neither set of headphones had a significant level of distortion.

Beyerdynamic DT 770	Sennheiser HD 650

Tracking

The HD 650s had stellar tracking, while the DT 770s were far more erratic.

Beyerdynamic DT 770	Sennheiser HD 650

Isolation

The HD 650s, with their open-back design, were poor isolators. The DT 770s did a much better job.

Beyerdynamic DT 770	Sennheiser HD 650

Comfort

Although the HD 650s’ padding wasn’t as soft as the DT 770s’, they also didn’t get as uncomfortable over time. For short wear sessions, the DT 770s are the better bet, while the HD 650s are much more comfortable after a few hours.

Wear
Beyerdynamic DT 770	Sennheiser HD 650

Verdict

The DT 770s actually performed better on our tests than the HD 650s. They were also less expensive. The HD 650s had some subjective qualities than the DT 770s didn’t, however, such as slightly better articulation and a larger soundstage. For the majority of buyers, the DT 770s will be the better choice. For higher-end users, we’d recommend giving them a test run before you make your final decision.