I know several who own them and I helped upgrade their only weakness
like most speakers under $30 k
they use the lower grad3 Ajantzen capacitors , for another $600
they should have used the Jantzen Alumina Z foil capacitor much better
after changing just 2 capacitor a big difference lone guy used the VH Audio Odam
capacitors and path audio resistors it make a very good speaker at least 15% better still. Just go to humble home made hifi capacitor test ,.