Actually, a good headset

The sound is very good and bass are plentiful. The volume is very good so you can crank up times correctly.
Positive are also the skip buttons on the device.
I like the design outstanding. It is classically timeless and there are beautiful colors available.
Processing and feel are also very fine, especially in the price range should not expect too much you.

Compared to the model E40 BT (on-ear) is about to see an an over-ear headphones.
The inner diameter of the ear cups is approximately 48mm. Thus, a bit small. Other manufacturers offer here> 50mm.
But the E50 BT of comfort is the major shortcoming. After about 30 minutes I realize that the headphones suppressed.
It is very unpleasant and therefore the KH is for me not in question. I had to dig a little deeper into their pockets and have now chosen by AKG K845 BT to.

Who does not have problems with the comfort of the JBL E50 BT, BT is a great headset for a fair price here.