I listen to my CDs, and SACDs, every time that i do my listening for pleasure which can vary from everyday to once a week. For work I have to use MP3s, iTunes, tracks sent in e-mails, and burned CDs, etc. I try to always avoid headphones. I think that next year will be the year that I assemble a server/database of High-res files and play thru my Esoteric K0-1 DAC.