Pros: Sound quality, looks, build quality, ease/stability of connection, comfort, used price
Cons: No hard case, no skip track function, gloss plastic on cups finger print magnets.
First impressions were good. They come in typical AKG packaging which is fairly basic but professional looking. When I removed the cans from their packaging I was pleased to see that they resembled a mini version of the AKG K550 which I also own and think are some of the classiest designed headphones out there at the moment.
Connecting to my phone was a breeze and intuitive, no need for instructions manuals here. The connection has remained stable both at home and on the go with no stutters or drop outs (when the battery was running down on my UE9000 they would drop out all the time indicating to me they needed a charge).
They were easy to adjust to a comfortable size with the headband sturdily and reassuringly clicking up and down the ratchets. The earpads are made of synthetic leather and memory foam. They have reasonable depth and sit comfortably around my medium sized ears. For those with larger ears these may become more like on ears which could affect comfort and seal. The padding on the headband is minimal but more than enough to support the weight of the headphones and sit comfortably on top of my head.
The sound was exactly what I'd hoped of these cans. They retain the AKG house sound with plenty of sparkle and revealing treble detail but also, more suprisingly, a decent thump in the bass and sub bass. Mids are not too forward but still present nicely within the music. Soundstage is not as wide as the UE9000 (probably because the drivers are much closer to the head, a plus for me anyway) or the K550's but is wide enough to make the presentation of the music believable. They are overall a very enjoyable listen in my opinion and reproduced all types of music tested pleasingly. Personally I don't understand why these headphones don't get more love (the reason I decided to write my first review)
The only negatives I could find were that there is no function to skip a track forwards or backwards with a double or triple click of the play button and the lack of a hard case. For the rrp I would have expected that.
So overall these will be replacing my UE9000. The bass and dynamics/soundstage functionality of the UE9000 best the K845BT. However, the look/size of the AKG'S combined with a better treble response make them the bluetooth headphones for me at the moment. My next purchase will be the momentum 2 wireless when the price drops but these will become my portables until then.