This small adapter is great to play quickly (on GarageBand for example) without taking the head with 50000 cables. The sound is not bad and the integrated effects in GarageBand, I enjoyed myself and I managed to approach me sounds like "Comfortably Numb" (Pink Floyd), "The Barn" (ZZtop) or still Knoppfler (Sultans of swing ...). In short, I used it almost every day until my HD iRig broke down. The blue LED indicates the Power is turned on but as soon as I launch GarageBand (I also tried it on other applications like Amplitube and other devices (iPad, iPhone or iMac), it turns off and a whooshing sound even a little feedback is heard. In short, after contacting IK Multimedia, I have not managed to make a trade for the shipping costs (US) would be as important as the price of a new iRig . IK Multimedia advised me to turn to Amazon but I have not even tried since the period of 3 months from purchase. I am very disappointed, I have perhaps not been lucky. .. but I glimpse in to buy me as I had fun with this interface. I would definitely recommend to others!