I have a Krell K-300i 4K which I bought as a demo ($5K) paired with Kef R300 speakers along with 2 Rel subs & to my ears the sound is truly "fantastic". I also have the Kef R700's which is the generation before the R11's. The combination of Krell & Kef sounds really sweet. The DAC on the Krell is really good for an integrated amp. You can hook it up directly to a desktop or laptop & being Roon Ready the computer will recognize the Krell on Spotify & 1 click to select it & you are ready to go. Music from the computer sounds really good, similar to CD quality. I think you could enjoy many years of high quality music using the DAC in the Krell. You can also use the Krell in place of the TV speakers by running a hi-def HDMI cable from the Krell to the eArc input on the TV. The broadcast sound is really good & it often sounds like a multitude of channels is being delivered & played from just 2 speakers. I also have a McIntosh MX160 11 channel home theater system & in all honesty the Krell sounds much better for music than the MAC. Finally, over time you can consider adding 1 or 2 Rel subs as you can hook them up via the Hi-level inputs on the subs. This will further enhance the musicality & soundstage of the entire system. Overall, I really like & enjoy the Krell & highly recommend it especially if you can find one in the 5K range where it represents excellent value.