The use of couplers often causes loss of sound quality. In the case of this: go ahead without fear. If your cables are bad: the product can not help you anyway :). But to couple good cables (eg "KabelDirekt Pro Series" available on the site): it
Fast delivery Received product conforms to the description and my expectations. It perfectly fulfills the mission for which I bought (adding Belkin Bluetooth in the car via jack). The sound of the iPhone through the speakers is correct ;-)
Really capricious ... A single ear of headphones plugged it works. you must then play with this adapter to get sound in both earpieces of the headphones or speakers ....
First congratulations to this site to propose products very difficult to trouver.Pour terms of product manufacture very neat entirely metal works fine without problem with jacks