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.
The DT770s are very comfortable to wear with its 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 no issues.
While the Sennheiser's 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 heads.
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.
These leak very little sound compared to other over-ear headphones. The rear side of the ear cups is fully closed, which effectively minimizes sound leakage. With these, you can fully enjoy your music without disturbing people beside you.
The MDR 7506 are reference-grade headphones. They reproduce clear sound, revealing a lot of detail in music.
The bass is just right. It may not have the deep sub-bass extension that bass heads crave for, but what is there is fast, tight and punchy. The mids are clear with a hint of warmth, which makes vocals and guitars sound very clear and you can easily hear their sonic nuances .
The reproduction of highs is the part that these headphones really shine. They are crystal clear and highly detailed without adding hiss or harshness to the overall sound. Cymbal crashes and pings, for example, are very close to what you would hear if they were played right in front of you.
The MDR 7506 is built outstandingly well, with high quality materials and with little to no creaks and unnecessary flex. These headphones have been around since 1991, which has given Sony a lot of time to refine the manufacturing process of these cans.
Despite being sub $100, the MDR 7506 can compete against headphones up to twice the price. These are great if you are just starting to get serious about your audio and you want a relatively inexpensive yet quality purchase.
The headphone cable is coiled and is about 10 feet long. This is great for studios, however walking around in public with these headphones on can be awkward. The cable cannot be removed and has no remote or mic.
Due to how accurate sounding these are, you will be able to hear minute details from the sound, including hiss, distortion, and the like. To get the most out of these headphones for music enjoyment, you will want to have a great audio source.
The HD380 Pro is quite portable thanks to the detachable cable. Also, the included cable has a specially designed locking mechanism which prevents it from being detached accidentally
The 380s sit well over your ears and do not typically touch them when positioned correctly. This helps make them comfortable as the clamping force is distributed over a wide area, not directly on your ears.
These headphones provide pretty good soundstage reproduction. Considering how good these headphones isolate sound which can have a huge negative impact on imaging and soundstage, what these headphones can give is definitely commendable.
These headphones can produce great sound even paired with low power amps. Some headphones require expensive amps to sound properly. With these headphones, even entry-level portable amps are sufficient.
The sound detail of this headset is superb. While listening to music you can clearly hear all the elements, from vocals to minor cymbal crashes. It also provides good spacial sound, since it offers distinct directional sound.