I moved from separates to a Rega Elicit-R integrated amp a few years ago. I also upgraded my CD player to the Rega Saturn-R CD player/transport/DAC. The Elicit-R has a good phono stage built-in. So, I only have 2 electronic components in my system, plus a turntable. My system is super clean looking and it sounds great. I listen to more music now than I did when I had separates. The Rega is very musical and has great bottom end driving my Infinity RS1.5 3-way large bookshelf speakers.
I don't see a day when I'll move back to separate pre-amp and amp.