Just got my KPH7's delivered yesterday. Put them through various test tracks to get a feel for the audio reproduction quality. First, while this should be obvious, these are not studio/reference class cans. They are, however, surprisingly (or unsurprisingly if you are a KOSS aficionado) great inexpensive headphones. The build quality is "light" and certainly not on par with something like the PortaPros, but, certainly not bad in my opinion. Build feels like something I don't mind tossing in my bag without its own protective case. Will they break, I don't really think so, but if they did, they are very accessible pricewise and I would not hesitate to replace them with another pair of the same. These are going to be great for pairing with something like my Steam Deck or just my phone to listen to music with perfectly acceptable audio quality. I saw another review describe the sound as "tinny" and I have no idea where they got that from. Sound is full, mids are surprisingly clean, and highs are just fine without being harsh. Soundstage is not the greatest, but again, for the price actually quite good. If you are looking for something to use while leaving more expensive options at home, I think these will suffice. If you simply need something that fits your budget, I don't think you will be disappointed. Light, comfortable enough for extended listening sessions, inexpensive, and really great battery life. I will recommend these to anyone looking for something under $40.