Definitely in love with these headphones. I was initially skeptical about having to download an App just to listen, but I now understand it's an enhancement, and not just a data-grab. The noise canceling is really great and effective. I was a litte disappointed with the "Neutral" sound setting, but that was before I downloaded the app and explored all the mixing options. 100% satisfied with sound quality now. Although I rated 5 stars, I just have a few recommendations: 1. the sliding scale buttons (Transparency, etc) on the app could be a little larger, my thumb misses them often. 2. The external contols on the right earpiece are not very intuitive and not designed for fine-tuning. Best reserved for making something Way-louder or way-softer. 3. The Quick Start instructions are terrible, where are the words? The infograms are not as decipherable as you think. 4. I think you need to create a "priority connections" option under the list of known devices. I like the multi point connection, but I can't reorder the list. 5. Lastly, I would love an iphone homescreen widget. Thanks!

THIS is how apps that control headphones should be designed. Using it with the HDB 630 is such a joy. If you want it simple, you can get simple. However, if you want expert with precision, they say, “Here you go!” instead of “We know better.”PEQ is such a joy to use. If you’re comfortable and familiar, the controls are super accessible. I was initially concerned about dialing parameters on a small smartphone screen, but the UX team has done a great job making the controls super smooth to use. I appreciate having a way to just enter numbers, too.Thanks, Sennheiser, for setting the bar high. Other headphone app product teams have a long way to go to catch up.

The Smart Control Plus app is really one of the best headphone companion apps I have ever used. It has a very clean, sleek, and modern design. The feature settings are straightforward to locate and adjust; I really appreciate the broad range of options I am able to change. This app gives me most of the options I want without being cluttered.That said, the one thing that I find sorely missing is, hopefully, something Sennheiser is listening to: a real 10-band parametric EQ. The 5-band design does much to remind us of the possibilities, but it feels like a system without enough levels of control for any user wanting something a little more refined. To add to this is the problem that the app does not display the Q value of each of the bands, which makes it hard to know just how narrow or how wide each adjustment is. For someone attempting to nail down a more precise or Harman-target-like sound signature, this is paramount. These headphones are definitely pitched at the audiophile crowd with features such as an audiophile-grade sound mode. It's downright shocking to consider that you might need to get a Qudelix 5K just to have EQ control that really ought to be at the fingertips of a product at this price point and for this target market.Please take into consideration the addition of a 10-band parametric EQ for a future update-the demand for such is clearly there among your more audio-conscious users. If this happens, my rating for this app will easily be a 5/5!

While my Accentum Wireless Headphones are top notch quality in terms of build materials and sound, the app is frankly mediocre, If you prefer to have your headphones on transparency mode rather than ANC you have to change the mode within the app, while this may seem insignificant, it’s very inconvenient to reopen the app for this. A second feature I’d like to see but it missing is a feature where my headphones power on and automatically select whichever mode I set on the app. Maybe even a feature where my pause/play button on my Accentums can be held down to change modes like how the Apple AirPods work. 🤞Other than small inconveniences within the app Im rating it 4 stars because all of the features work, the layout of the app is a little messy but the headphones sound amazing.