It seems to me that one of two things (or both) have to go: either the Idea or the Vitus -- or both.
While room treatment & better cabling surely may help, I don't think either or both endeavours will liven up the system as required -- and the Vitus you have (regardless of taste) will easily drive the speaker load: it is not a matter of insufficient power but, rather,
Empirically, I (too) have found that your speakers seem to play best at higher amplitudes-- and to me they sound clear and well defined rather than dynamic.
If you go the hardware way,
More "dynamic" sounding power amps: at your price range it's best to buy used (Symphonic Line Kraft, Goldmund, Spectral, etc)
Regards
While room treatment & better cabling surely may help, I don't think either or both endeavours will liven up the system as required -- and the Vitus you have (regardless of taste) will easily drive the speaker load: it is not a matter of insufficient power but, rather,
Empirically, I (too) have found that your speakers seem to play best at higher amplitudes-- and to me they sound clear and well defined rather than dynamic.
If you go the hardware way,
I agree wholeheartedly. The CAT is good in its previous iterations as well (I used to have the SL1 ultimate) I will also add the EAR 912 that you mentioned -- an excellent pre for a reasonable price (by high-end standards).May I suggest a couple of other options to consider if you can, especially if you don't listen at high volumes - for preamp look at a new or used CAT SL1 Renaissance and for power amp used or new Pass Labs XA25 Class A power amp ...
More "dynamic" sounding power amps: at your price range it's best to buy used (Symphonic Line Kraft, Goldmund, Spectral, etc)
Regards