So I'm trying to upgrade my computer audio. I'm going to be buying a DAC and a desktop 2.1 system. I'm not too knowledgeable about this so I was wondering if the following would work. I have a 5.1 setup in the same room so I'm not looking for loudness, just quality. I'd prefer not to get a sub but there are some small ones so I'm leaning towards one of those. Motherboard ASRock Z170m Extreme4 - 1 x Optical SPDIF Out Port - HD Audio Jacks: Rear Speaker / Central / Bass / Line in / Front Speaker / Microphone - Supports Purity Sound™ 3 - Nichicon Fine Gold Series Audio Caps - 115dB SNR DAC with differential amplifier DAC Choices I'm not sure which one of these would work best or if there's a better choice out there. I never plan on using this with headphones and it will stay stationary at my PC so I'm wondering if there's anything without an amp? Audioquest Dragonfly DAC Black Schiit Modi 2 Schiit Modi 2 Uber (If optical out is better) Audio Engine D1 Mayflower ODAC Rev B. – Stand Alone (Would this work if I don't need an amp for headphones?) Speaker Choices These are the smallest quality speakers I could find. I'm leaning towards the Kanto currently. Kanto YU2 Audio Engine A2+ Creative Z 533 PSB Speakers Alpha 1-100 *Awesome choice but too expensive so I've listed it incase anyone finds this thread in the future. Sub Choices I need something that's small and not overly large, that's why I'm looking at the Kanto Sub6. Kanto Sub6 Cambridge Audio Minx X201 Audioengine S8 PSB Speakers SubSeries 100 Questions: 1) Does going from optical out on my motherboard to a DAC provide better sound quality than a USB DAC? I do realize that will limit the output quality to 24/192 which is the maximum of optical output. 2) From the DAC to the speakers I will have about 8-10 feet of wire. Is there anything I should keep in mind for this? 3) Is the Dragonfly better than the Modi 2? I'm not entirely sure how to measure that. 4) If I use a USB DAC should I still install the Realtek drivers or just leave those devices uninstalled. The setup that I'm thinking of going that's the easiest is the Dragonfly Black, Kanto Yu2 and Kanto Sub6 which should be small enough to meet my space requirements but upgrade my sound quite a bit. I'm definitely open to suggestions though.