Br3098 8-4-2018
I have heard the new ZTPre "V6" design, paired with decware 6Wpc monoblocks and **decware speakers** [emphasis added], and I can definitively say that it is not rolled off on the bottom end.
To add to my previous response, it appears that none of the speakers shown at the Decware website would provide deep bass extension that is remotely close to what is provided by the OP’s Focal Grande Utopias. According to specs indicated in Stereophile the Focals incorporate a 15 inch woofer and an 11 inch mid-bass/lower midrange driver, and weigh 397 pounds. Completely different animals than the Decware speakers, and speakers that would clearly be far more revealing of bottom octave rolloff.
Regards,
-- Al