The Beyerdynamic DT770 Pro 32-Ohm (Black) is a Closed-Back Dynamic Headphone with Limiter. Due to the Diffuse Field Equalisation and the innovative Bass Reflex System the listener experiences a sound quality which is balanced over the whole Frequency Range, but still powerful and brilliant. Both the Sound Engineer and the Artist feel comfortable with these Closed-Back Headphones. It is not for nothing that the DT770 Pro are among the most popular Headphones Music Store customers choose, as the wearing comfort of the Spring Steel Bracket Construction is second to none.

HEADPHONE LAB is free software from beyerdynamic that was developed specifically for DT Studio headphones and makes mixing and mastering much more reliable. The plugin calibrates the frequency response of the respective DT model to a neutral, studio-compatible target and supplements the whole thing with a realistic speaker simulation so that working with headphones feels more like listening to good monitors. There are two calibration modes available: a standard calibration based on a reference model and, for selected DT headphones, a factory calibration that uses the individual measurement data of your specific headphones. This allows for more precise assessment of stereo imaging, phantom center, and depth gradation, even in rooms without perfect acoustics or when on the go.

This was delivered to the basement flat for some reason so I emailed in and got a very fast call back from a very friendly and helpful man, who saw the delivery notes and directed me to the package.
Would recommend 10/10