Bought for listening to music with headphones AKG K272 HD. Purchase additional headphone amp is in my opinion no need to because the gain is already excellent. For classical music, spatialization is amazing. For contemporary music, ditto. This is very clear, detailed and dynamic. Just could you blame him a slight lack in the low frequencies, and again. I rediscover music with details that I had not heard before. I have not managed to connect to my PC but the microSD card has been recognized hd no problem. Search by artist, song or album of your choice. Illustration albums displayed without problems but tiny. The criticisms? it is not the most compact (but the power is there) and the screen is less friendly than a product of the last apple cry, but given the difference in sound, we forgive him, especially since the buttons are there to facilitate change tracks and volume. However, be careful to put only the correct files (M4A alac for me) and no MP3 because the sound is of poor quality and that means! A good helmet is also needed. Summary: Not great for showing off with her look a little dated, but great for listening to music with excellent sound (to my taste anyway) ... and pleasantly surprised to see the ships with a flexible protection. downloadable leaflet on the site ibasso.