I got this device about a month ago and after using only the USB/DAC with HD650, I would be interested in trying using the S/PDIF-connection since I read somewhere on this thread that it makes the sound quality better. Is that true? Since I only have a laptop with USB-connectors I would probably need some sort of adapter? Would either of these two work: https://www.amazon.co.uk/Nobsound-C...8&qid=1510400396&sr=8-1&keywords=usb+to+spdif https://www.amazon.com/Musical-Fidelity-V-LINK-Asynchronous-Converter/dp/B00718X2TU I'm open to other recommendations/tips as well. Most of my music libarary is in Apple-lossless format.