Never heard about Audiaflight Stremento #4 MK 2 or the brand but 7500 ohm is the lowest input impedance I've seen yet for an amplifier. Makes the preamp or cable matching a bit challenging. But it sure looks like a power house.
Pass Labs X260.8 owners please check in ....
How do you like your amps? Did you try another Pass amp before settling on these? Do you have any experience with the X250.8? What speakers are you pairing with them? Thank you!!!!