The treble of the DT 880 is one of those “love it or hate it” things.
Some people love the DT 880, and find it to be the most “transparent” and detailed sound anywhere near its price. You may feel that way.
I don’t like to speak out against products, because I realize personal taste is one of the most important aspects of liking a headphone, especially early on along “the journey,” but... I thought I would like the DT 880, bought a 600 Ω premium edition, and I found the overall character tinny, the mids to sound hollow, the treble to sound overly accentuated at certain frequencies, and the headphone gave me tinnitus. I literally mean it gave me tinnitus: I’ve always been careful about my ears and volume when I could help it, but after playing a video game for an hour I had the first phantom ear-ringing I can ever remember experiencing. I was around 28 years old when that happened, and even though I returned the headphone (thanks Amazon!), to this day I will still intermittently have a ringing in my ears come in the middle of the night or at another quiet moment. The DT880 seems bright but not outright ear-piercing, so the fatigue that lead up to the ringing crept up on me.
The amp I was using (turtle beach DSS2) wasn’t high end but also not a shrill amp; I would advise anyone interested in trying almost any Beyerdynamic to use a higher quality, smooth, and maybe even dark - sounding amp like a Violectric or something, be a little extra conservative with volume, and buy with a good return policy. I have listened a few times since then on really high-end, reference amp/DAC setups costing thousands of dollars, and they help a bit, but a neutral amp still doesn’t quite get rid of the knife edge.
The latest 1770 and 1990 series take off some of the fatiguing edge of these older models while still remaining bright: it's a small change but makes all the difference to me. All the Beyerdynamic headphones I’ve tried had bright sound signatures except the T51i and Amiron Wireless.
I was just at CanJam RMAF where I heard the Amiron Wireless, and then I went over to the HD 660 S, which just kicked the Amiron out of contention. The HD 660 S isn’t a dark headphone either, but it sounds more agile, lively, full bodied, and balanced. I played them off the same Flac file on my FiiO X7 to level the playing field as much as possible, and I’ve heard great results from Apt-X in the past that wouldn’t cause the Amiron the level of disadvantage I heard... but the Amiron Wireless is more expensive, closed-back in a mildly noisy CanJam event, using a Beyerdynamic selected DAC/Amp combo built-into the headphone with a short direct signal path, while the HD 660 S is open backed and I plugged it straight into my X7, so feel free to disregard my observations if you desire.
Back to the DT 880 vs HD 58X Jubilee. I returned the DT 880 for the reasons I mentioned before, and I have (and kept) a preproduction HD 58X Jubilee. Even the preproduction Jubilee isn’t as bright or fatiguing as the DT 880 was, certainly not as thin and hollow sounding. I don’t have the DT 880 on hand to compare details directly, but the HD 58X still impressed me as having good insight and provides a “wow” moment for people who are more used to car sound systems and other common speakers and headphones. I was always going recommend the HD 58X over a DT 880, but I think it’s worth explaining why.