If your laptop is a PC the USB output to the Aune DAC is the way to go, as Swampwalker explained.
I've had a couple of the Aune DACs and they're quite good. I used them with the optical output on Mac laptops from the combined headphone/mini-Toslink jack and thought that sounded a little better than USB but either is going to be an improvement over the headphone output.
And, as Swampwalker said, YouTube audio isn't great quality but getting yourself set up to use the USB output will give you considerably quality from other streaming services like MOG, where the 320 kbps output can sound pretty good.
I've had a couple of the Aune DACs and they're quite good. I used them with the optical output on Mac laptops from the combined headphone/mini-Toslink jack and thought that sounded a little better than USB but either is going to be an improvement over the headphone output.
And, as Swampwalker said, YouTube audio isn't great quality but getting yourself set up to use the USB output will give you considerably quality from other streaming services like MOG, where the 320 kbps output can sound pretty good.