As you may know AKG is one of the best headphones company in the world , mostly focused in studio headphones . But this company more recently also produces home audio headphones and earphones . This set has been given to me from a friend for a test . and is the smallest number of the 3xx series
As you may see the packing is one of the best you can see!
under a nice packing with easy to open box
a better picture of the sealed earphones :
quite different design from most earphones. huh ?
A photo showing the production country (which is P R China as usual )
and here another closeup of the earphones . it has the sense of heavy earphones with metallic laser punched speaker
And here are the results of some experiments :
Using it with AKG 315
-separate listening : it sounds flatter than 315
-in parallel with via audio splitter by using : 'drawing' a line in between the ears setting as 0 the 309 and 10 for 315 audio goes to point 6. That means 309 has slightly less volume than 315 . i found that some excess bass and treble goes to the 309
Using with Sony 755 (my main )
- using in parallel same technique as a above : Audio goes to position 6 towards 755 with soem treble goes to 309 (position 4)