Hi Muralman1, I have done a test in biamp but it was a disaster ... The Jadis has not the power to support the DIVA. And the merge of the 2 sound from tube and SS was wrong even if in stand alone the Jadis is good. So I have stop the manip and gone to mono amp with the Threshold but this one is modified by myself with 96000µf each side and audiophile components inside and now it's equivalent as a pair of SA/6e !. Really exceptional.