I bet in a level-matched blind test my Sumo Andromeda would be indistinguishable from any of the above amps.
Only if one is both deaf and a Luddite.
I bet life is great in a vintage echo chamber.
D’Agostino Progression integrated
What are your thoughts on the Progression int? How does it compare to integrated amps like Gryphon Diablo 300, Vitus 101 mkII and and Pass int250?