Getting back to the OP question, I think it depends on the signature of the individual components and the component matching.
Your integrated amp has an input of 100k ohms. That is sufficiently high to allow upstream components to drive it without problems. OTOH, some solid state components might have a low input impedance which could present problems for some high output impedance tube equipment.
Your integrated amp has an input of 100k ohms. That is sufficiently high to allow upstream components to drive it without problems. OTOH, some solid state components might have a low input impedance which could present problems for some high output impedance tube equipment.