Many thanks for quick responses.
Anyway, I should have said that I am a complete idiot in digital audio.
I have two power amps (Plinius SA102 and Quicksilver monoblocks) and two preamps (Audible Illusions M3B and Plinius M16P). For the starter, I would still keep the amps and preamps for digital music, even though a streamer integrated amps like Lyngdorf TDAI-1120 look interesting.
I use Spotify with BluDento BLT-HD (Bluetooth receiver) from my iPhone.
Can I still use BluDento if I switch to Qobuz? If I can, how would be the sound quality? Bluesound streamer will be better?
Do people usually keep their digital files locally (in computer or usb storage)? Or, subscribe to Qobuz or Spotify?
I mostly listen to music at home and I am not sure whether I will spend time to covert my CD collections (about 1000) to digital files. Maybe I will do for my LPs (around 3000) if there is an easy way to store to digital format.
Again, thanks for your input.