DT-770 M : Nice quality, but lacking in low end isolation

I used to play the acoustic drums so I know the value of a great isolating pair of headphones. These certainly do isolate very well for the most part, but sadly they're lacking in low end isolation, which is a real disappointment. I think if I was using these in a practice or live scenario with a loud bass amp I would have to use earplugs as well to dampen down those lower frequencies. As far as taking these out day to day to listen to music, they certainly do a good job on that front. Being 80 ohms, they're just about loud enough to listen to music on my phone at full volume and block out all the sounds, except again the bass frequencies. I was on a turboprop flight behind a 2-year-old and while it mercifully blocked out any trace of toddler sound, there was no protection against the drone of the propellers, and no option to add earplugs because of the lack of volume. As far as the sound goes, these have a nice balance. Being closed back, they're always going to put pressure on your eardrums, but that's the price you have to pay for the isolation. But again there is a lack of the low end frequencies, which does exacerbate that lack of bass isolation. These are great quality headphones that feel really well put together, and they're very comfortable to wear for hours at a time. It's just a shame that they don't give that full-spectrum isolation I was looking for.