Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: How loud is the sound leakage due to the open-acoustic design? Will I bother someone sleeping behind a thin wall ~5 feet away?
Document: They have detailed highs, descent bass response, and even a solid mid-range. They work better for games and movies than certain music. I tend to prefer more bass with Rock & R&B; type music than these provide. Otherwise I've always found them to deliver a nice accurate sound.I personally prefer the PC360/3 to the PC350's primarily due to the fact that these are open acoustic headsets. They don't block out external sound and provide a more open listening experience on their own.
Sennheiser gave me a really big scare when they released 2 new gaming headphones after I bought these headphones. But after comparing them, I determined they were about the same with just small differences, such as leather closed ear cups instead of a foam open ear cups.I personally prefer open ear design and the foam, I get sweaty ears after long headphone usage, and this headphone helped a lot with the solution (I still sweat after long hours of gaming sessions)5/5Get this headphone!
The surround sound is by far the best I've ever heard from any of the headsets I've tried. The mic is also exceptionally good and clear. One final note, because these are open can headphones the bass may not be quite as loud as some other headphones out there, but they produce a more accurate sound.
Just trust the quality of the drivers and know you're getting accurate sound.Turn on Dolby Headphone whenever your game supports surround output, and set it to 5.1 or 7.1. For music, web and stereo sources, just turn it off.Build quality is really solid, heavy duty plastic. They're comfortable to wear for long periods, and my head doesn't get tired or sweaty.On a final note - I had the Astro A50s before this, and these blow them away.
I recently purchased these after trying many different headsets that were all disappointing or not worth the upgrade compared to my previous pair of Logitech G930's. I finally decided to give these a shot based on the number of positive reviews that I had seen previously. It was a bit strange going to the open can design and how outside sound can come into them. They also bleed sound, so if you are in a room with other people, be aware that other people can hear them.
Nice soft ear cups allowing my ears to breath. I'm always nervous when getting a headset, as I have really really big ears. But these cup my ears wonderfully. The mic is superb. Clearest I've heard. The noise cancellation doesn't seem to work very well. But that could be my fault, as I have my TV and speakers about 3-4 feet away from where I sit at my computer using this headset.
2 year warranty though, so that's nice.-It took me a little while to get used to the open-ear design and being able to hear things around me. After a while I decided to just turn off all the offending appliances (fan, air purifier, TV, etc.)
Too bad, whatever their reputation was, its sure to be marred for this decision.I am still considering the SteelSeries Siberia Elite, solely because they are bucking the design/engineered obsolescence trend with full steel head-band construction. Waiting to see and hear more reviews.Oh one more thing, you can bet that some if not the majority of 5 star reviews for anything on amazon.com are totally created by the company peddling whatever is in question.
I then came hear and read one stellar review after another so I pulled the trigger.The nitty gritty:The base is non-existent, the Plantronics Gamecom 780, a $50 headset, has far superior low-end reproduction.Directional audio: I could discern no improvement over the Plantronics set.Comfort: Aside from the open-air design, which the Plantronics set lacks, I found the headband to actually sit on my head in a  way that wasn't as comfortable as the Plantronics Gamecom 780.
If you don't mind the open ear design, which isn't bad at all just turn up the volume and you can't hear anything around you anyway, these are great and well worth the money.
Answer: My husband owns these headphones, and I sit about 3 feet away from him on my own computer often when he's playing online. If I listen very hard I can just hear the sound of voices, but not enough to know what they're saying. I have heard people though when they were excited and shouting, but still not audible enough to be distinctive. I don't think you'd be disturbing anyone in another room, other than by your own voice when speaking maybe. Hope this helps.