Hi, I have had these headphones for a few years now. I previously had (and still have but just don't use anymore) a pair of 'Sony MDR CD 270', which I used to love, but then I bought these ones.
When I bought these ones, because I was used to the Sony's, at first, they sounded kind of too high-pitched and too little bass but, with time, I started to put the Sony's on and they just sounded too distorted (exaggerated bass and too few high-range definition). It turns out my ears had been adapted to the low-quality, low-definition sound of the Sony's (which isn't totally bad but nothing in comparison to these AKG)
So this is what I think now about the AKG 912 - In terms of sound quality, I absolutely love them and I haven't heard anything better so far because reality, neutrality, balance and detail definition is what I prize in the sound.
BUT, like other users have mentioned here, OCCASIONALLY (not always, it just happens like 1 or 2 days in a row, like once a month, I don't know why) interference shows up. I don't know how interference only shows up on these few occasions but that's how it happens for me. Most of the time, the signal is absolutely clean though, with no interference. I guess that this means that you will get more or less interference depending on the air-waves in your location...
The aspect the last commenter mentioned regarding the clicking sounds of the unit turning on/off, I have totally adjusted to that and it doesn't bother me in the slightest. If you get used to turning the headphones off as soon as you stop listening to something (most people are used to keeping the headphones in their heads after they have listened to a song for example, but I have gotten used to turn mine off (I also rest them in my neck for coolness). When I want to start listening to something else again, I just put them back on and press the button. This practice will also save you battery and keep your head cooler.
Would I recommend these headphones?
It's certainly an awesome feeling of freedom not to have your head attached to a wire. Whenever I get up in the middle of the night to go to the kitchen, I don't have to stop listening to whatever I'm listening to, like the previous commenter said, the headphones have a good range. Even if I'm not listening to anything and the headphones are turned off, I don't have to remove them from my neck, I can just go about the house and don't have to perform that "wired ritual" of putting the headphones on the table so I can get up and walk. That is definitely a life-changing experience but I definitely recommend having a 2nd pair of like 20/30 € wired headphones ready for those few occasions when there is actually interference in the signal.
another huge thing in these AKG's which is the ability to remove and wash the ear pads. In the summer, one gets sweaty and, most headphones do not posess this simple but essential feature so that's another plus on these headphones. The ear pads are also very comfortable - Because they don't imitate leather (they are made of fabric) they don't stick to the skin). Very comfortable headphones, despite the fact that the headband will inevitably fold at the middle but that's not affecting the comfort or experience in any way.
One time the headphones appeared to stop working, I went back and forth trying to figure out what was wrong with them. Turns out one of the batteries had come off partially. If the headphones ever stop work for no reason, remove the ear pads and check if the batteries are well placed.
If you stop listening to them and leave them on, sometimes they will not automatically tune in to your reception when you put some sound on, but this problem is easily fixed buy turning them off/on again.
