I use the Bow Technologies Wazoo integrated amplifier for my Sonus Faber Electra Speakers. The unit sells for around $3,500, is very smooth, very musicial and I suggest you listen to it in your system. The Sonus Faber Musica Integrated amplifier is another unit I suggest you try.
Power Amp for Sonus Faber Electa Amatour
Looking for suggestions regarding a power amp to drive Sonus Faber Electa Amatour II speakers....$4K price range more or less