Hi LuisCesar,
thank you for your impression about driving Alexias with darTZeel electronics! Does you 108 amp has the SNCP-upgrade? Good to know that this amp can drive an Alexia. Sometimes you read different. My room is similar, a bit larger with 50 sqm. I think about purchasing by time a 108 for center channel or rear speakers (the Sophia 3 is more loudspeaker friendly).
You highlight a really interesting topic: Is it better to invest your money in electronics or speakers? Normaly you always invest in room and speaker. I think you should spend your money in the weakest link of your chain. In my case I was longtime thinking about the alternatives between a WA Alexx or darTZeel monos. Was is better? Nobody can tell you. I decided for the red and gold party.
Thank you! Yes It has the SNCP. (I think all models B have it)
It is not a theoretical decision, you have to hear and try (If you have the chance). If i had the chance (and the money) I should go for sure for a pair of monos and a Alexia 2.
Congrats for your big monos !!