I was talking to a fellow who is a reviewer in the UK about a separate topic, when we got on to Gryphon. The feeling in his neck of the woods is very similar to what you're saying, but with particular regard to the Mirage and Sonata Allegro preamps. Anyways, to make a long story short, their sense (ie: his circle in the UK) was that the Pandora/Mephisto were reminiscent of the Sonata Allegro/Antilean in their sound.
We went on to speculate that the Mirage/Colosseum styling was not too well received in the often conservative Asian market (which is Gryphon's biggest market), thus the Pandora/Mephisto were released.
Thanks for that...good to know. That direction is probably a good one for the Mephisto. And l really like the Colosseum. I have also spoken with a well-regarded reviewer in the UK, and he did confide that Gryphon Antileon ranks up there as one of the all time greats in his experience over the years of reviewing. He also noted the latest ARC preamps, Lyra Connoisseur and a few other noteworthys over the years.