Great value. It allows you to adjust the listening mode to your preferred mix. Im sending it back. The review from Ari F. The bolts stick out so much at the bottom of the brackets that mount the carriers to the vehicle cross bars. I bought these Jlab Audio Studio on-ear headphones and so far I really seem to like these. They exceeded expectations. I got a pair in another country sold as "bose" ear buds (R). 0/3. The slippers fit well.