I have an ASUS gaming laptop hooked up to my DAC with a USB cable (I’m using Qobuz). I have compared several CDs to their streamed counterparts through the same DAC and found that there is no detectable difference in their sound. It turns out that most people have not tried this themselves
@8th-note I did, and I’m sure many others here have as well — we audiophiles just can’t help ourselves. I started streaming from my computer (also with Qobuz) and was pretty happy with the sound, but one day I got curious and did a direct A/B comparison with CDs using my transport into the same DAC and was pretty depressed when I found CDs to consistently sound significantly better across the board — not even close. The noise floor dropped, imaging popped, soundstage expanded, and dynamics improved. It was like moving from MP3 to CD resolution if I were to make an apt analogy. This was a bad day as an audiophile. When I brought this up here several people said I needed to get a dedicated streamer, so still a little skeptical I heeded that advice and bought a used iFi Zen Stream, which is decent but by no means is a high-end streamer, and BAM! Right away it was clear the streaming now significantly bettered CDs. The difference was not subtle, and needless to say I was very happy and greatly relieved (and very appreciative of the sage advice and encouragement I got here!). Likewise I’d encourage anyone using a computer source who thinks it sounds good to at least try a dedicated streamer — you might be surprised, as I was, about how much performance you may be leaving on the (computer) table.