I sat down with the 880 this morning… It does most definitely have some stiff pads and slight clamp force out of the box, it’s a semi open so probably was designed like this for a little more isolation.
Personally speaking I feel these both lacks a little in the bass department and is definitely flatter. It’s a little on the heavy side but at the same time I will say the k702 had a little more detail and complexity. These are definite not bass head quality and it’s more on the lighter side of bass it’s bright while staying prominent yet airy. I will say that the k702’s go a slightly bit deeper into the bass while the 880 is heavier just not as detailed
K702’s treble is definitely the tamer one here however these are similar to the 990s as they have a small V signature to them. The 880s have enough treble to them to make them borderline sibilant of which I can definitely see a complaint for some people. The treble I feel is more prominent on these 880s than it is on a k702
Build quality on the 880s is Vastly superior to the k702, cheap plastic on the k702 and a terrible clamping headband against steel, leather, and hardened plastic with very soft padding to go along with it. Padding wise the 880 is better. Overall though the 880 is smaller than the k702
Impedance testing. For the sake of this test I ordered a secondary copy of the 32 ohm vs the 600 ohm I had wanted to test. The main difference I can pinpoint directly here is on the 600 ohm it sound just slightly cleaner especially on vocals and treble whereas the treble and bass are more prominent in the 600 ohm. These however, are fairly smaller difference and my ears are sensitive to a bit of a fault. The 32 ohm was designed with mobile in mind so I tested this… I did feel it could be a tad louder but its acceptable… I had to place it on full to get a full sound experience though.
Sound staging this was interesting to see I had to take it in game to see for myself how these would perform and personally speaking these 880 definitely aren’t bad by any means. They feel close to perfect on sound staging for games such as Counter Strike or Call of Duty and a good balance in larger games like Fortnite, Apex, Arma, and Planetside it’s not TOO wide. However, the k702 definitely takes the win here for having a MUCH wider sound stage and in some cases I feel is a bit to much. The k702 I found I could discern the different sounds a little easier and it was the more analytical headphone meanwhile the 880s had some sounds that were a little more clumped together with complex sounds and the it was the same with more complex music arrangements which could make the 880s sound a little bit muddy. While these are minor points in sound different it’s still there that’s not to say that the 880 falls very short as it still sounds incredible in sound staging. Imaging wise these are pretty even outside of k702 being the more detailed headphone
Detail wise as said I said above this goes to the k702 as they are definitely more analytical and accurate here they are very crisp and detailed in comparison to the 880s
In most cases these two are harder to compare as 880s are a semi open back which causes a little bit of clamping force respectfully while the k702 are an open back. I will say this though that the 880s feel like they would definitely be better as an all rounder while the k702 is far to analytical and would be better for certain styles of music like instrumental recordings and classical.The vocals I found to be very different between these too and it’s probably due to the slight recessed mids. I honestly liked the 880s vocals a little more as with the k702 they sounded distant and blended which isn’t my taste meanwhile the 880s felt a little more face forward, intimate, and not as recessed.
I will say this though that I felt that thanks to the lighter response that the beyers have this made the headphone seem a little airier that added with the treble gave the 880s that thin style sound in some cases that I have come to expect from a dt 990. Honestly these 880s feel like a mix between 770s and 990s they definitely are one of those you would want to sit down with and test. For competitive these both are fantastic but if you want a less analytical colored approach go with the 880s especially if comfort is a concern between these two I found my head actually hurting a little and being uncomfortable after a while on the k702 meanwhile I was able to sit for hours with the 880s. Musical wise I do feel the k702 comes out on top but gaming is a different story and I preferred the 880s bar none in this case