Great! I listened many times to the original version of Gr-ex midi, when Accuton ceramic drivers were employed as mids. A friend of mine has a pair here and I listened also in the showroom of the past Italian importer.
What I can say? I remember that these were the most demanding power of all Kharma production, the two woofer in parallel (manufactured by Eton, now they seems custom-made) needs a lot of Watts to sing and also great control by the amp. In comparison, the original "Exquisite Classic" (the Ones that Mike Lavigne had before) are more easier ti drive and by a large margin.
Be prepared to squeeze the D'Agostino amps... You'll be certainly satisfied!