Hi, First off, my equipment: AMP: TEAC ai-501da (an unfair review, imho) Speakers: Guru Junior PC running Windows 10 with on-board soundcard connected via Toslink PS4 connect via Toslink Source is Spotify So a few months back I discovered that the audio from my PS4 is noticeably better than my PC. The audio from PC is not bad, and I haven't even given it a thought, but haven't it been from the random fact that I just opened Spotify on my PS4 and tried it, I wouldn't have noticed it. To describe the difference I would say that the audio from the PS4 is wider, more spacious and clearer. It's also a bit louder, which gets very noticeable when I turn the volume knob down, and the bass is dryer and a bit more punchy. I don't know if this description helps, it's not very scientific. Since the discovery I've done a lot of tests, I've checked settings and played around with volume settings (which I now just leave on max), and there is still this leap in audio quality when I move to PS4. I've googled without any luck. So now I play all my music through Spotify on my PS4, controlling it via my smartphone or tablet. It's quite nice, I like it tbh, but I still want to address the fact that the audio quality is not matched on my PC. I would like some help understanding why this happens, since both are digital sources, and what I can do to improve the audio quality from my PC (without divorcing my wife)? I might have missed mentioning any crucial details or information, please let me know if that's the case. Thanks for reading! //Srg.