First how big is your room?17m x 17m is HUGE!My room is 14'x16'(about 4m. x 5m)....Is the room acoustically treated at first reflection points and for echo?Is the room "bright",ie:lots of hard reflective surfaces like glass,stone,hardwood floors & bare sheetrock?
Second I suspect that the Hegel is pure & uncolored and you are hearing the Monitor Audio's Ceramic coated aluminum drivers for what they are,slightly cold & clinical....
Before replacing gear try sorting out room acoustics & try some Cardas cables which are known to be very smooth & slightly warm....
As for amps in Solid State that have a warm voice try Simaudio or Electrocompaniet...
Second I suspect that the Hegel is pure & uncolored and you are hearing the Monitor Audio's Ceramic coated aluminum drivers for what they are,slightly cold & clinical....
Before replacing gear try sorting out room acoustics & try some Cardas cables which are known to be very smooth & slightly warm....
As for amps in Solid State that have a warm voice try Simaudio or Electrocompaniet...