One of the joints came unglued on day one. I purchased size 9 Minnetonka men?s slippers identical to a pair I purchased last time, I thought looked like them cost the same except the size was way off. The pairing with my iphone has then been easy and quick: I started with some music on Spotify and it was really good. (and wait for the light to turn solid blue). IL V10/V20 mi vede la cuffia come carico ad alta impedenza, pertanto si attiva lamplificatore integrato e la pressione sonora è più che adeguata con le AKG (salvo che vogliate una discoteca sulla testa). 1/5 stars. Bought the pack of three to give as gifts but decided to try them out first. My son said it worked perfectly with his headphone! For the price you pay, it?s worth it! Very happy with the quality of recording that Ive been able to get from this mic when paired with my H6 field recorder.