I'm reviewing these headphones on the basis that they cost me just €50 (£36.50 as of Apr 7, 2015), and I would review them at 3 or maybe just 2 stars if they cost in excess of £80!
- They pair easily with my LG G3 smartphone, and once paired, reconnection is never an issue
- as a headset, the voice quality is excellent. The people I have called have not noticed any issues with mic volume or feedback echo
- for music listening, they are clear, crisp and not tiring. Treble is not too busy, and mids are nice. Bass adequate, if not particularly impressive
- bluetooth bandwidth and codec compression appears to be adequate for my 224kbps VBR mp3 files. I have not tested the headphones with FLAC or APE files, since I don't store them on my smartphone due to the hefty file size
- for podcasts, sound is perfectly clear, and voices are rich
- range is quite good, around 10m as stated, when in line of sight, and about 7-8m even when line of sight is interrupted by thin walls, double glazing, doors etc
- comfortable, with adjustable neckband, well padded ear cups and headband
- well made, overall (even if the buttons are "clicky")
- they fold up in a typical DJ style, so they are easy to carry in a jacket pocket
- charges quickly (although I often use a high speed USB charger, 1.0-1.6A)
- nasty buttons: cheap feel, poor placement, loud clicking sound when pressed
- no 3.5mm jack to allow direct wired connection. FYI, I knew this before I purchased them, but I would be giving 5 stars if they did
- irritating blue LED on the outside of the left hand earpiece flashes every 4 seconds, and it's bright enough to illuminate a dark room. Completely unnecessary, IMO
As you can see, the number of pros outweigh the cons by a significant margin, but the cons are major gripes for me, the biggest drawback being the lack of a wired connection for fallback reasons or for when listening to high quality / lossless audio. If the BT module, USB module or battery fails, they will end up in the bin. Presumably, AKG feels that adding a 3.5mm jack would put them into direct competition with the BT headsets in a higher price bracket. However, I have seen headsets in the same price range with BT, NFC and wired connectivity (August EP650, Avantree Audition), so I think it should have been provided.
At €50/£35 or less, these headphones (provided they turn out to be durable, as I would expect from any AKG cans) represent very good value. I would simply not have considered them at a higher price.