Of the three components you mentioned, you cannot use the Classe because it is a power amp only, not an integrated amp. To make a power amp function you would still need to purchase a preamp, which has controls (such as volume) and inputs to connect sources.
The two integrated amps listed could not be more different. It is a choice between a minimalist tube (valve) unit and a feature-packed solid-state unit that has many digital connections. If you want great flexibility and do not need HDMI connections, the Rotel would be an excellent choice.
Note that I have not heard any of the stated components, so I cannot comment on sound quality.
Good luck!
The two integrated amps listed could not be more different. It is a choice between a minimalist tube (valve) unit and a feature-packed solid-state unit that has many digital connections. If you want great flexibility and do not need HDMI connections, the Rotel would be an excellent choice.
Note that I have not heard any of the stated components, so I cannot comment on sound quality.
Good luck!