Wow man you are like a hungry cat waiting to trap a mouse....Like I said I couldnt audition the AKG K340 less than a year ago coz the seller wanted me to buy it if I audition them. ... what is the conclusion you claim I make here? That the AKG K340 uses a DD for bass because electrets can't cough up the bass?Its a conclusion I can make by not listening/owning them. If you see a reason other than that to explain AKG's making a hybrid please enlighten me... I am curious.