I've tried to do A/B tests with various PC sound output options, and I agree the difference with external DAC/amps borders on imperceptible. I do use a pretty expensive Monolith DAC/amp unit as my daily driver, but it's mostly because the money is already spent, and the connectivity options (XLR and 1/4") match better with the cables, on which my money is also already spent. So "why not". But when I've switched to mobo output, or when I've transitioned from mobo output to a Fiio K3, I've struggled mightily to detect any difference. I also used a GoXLR Mini for a while and was happy with that (I'd still be using it, if not for issues with audio cutting out intermittently).