I just found a review of the Pass Labs INT-250 by Steve Huff. It is useful he included a short note on the comparison between the INT-250 and Luxman L-590AXII.
Link below.
https://www.stevehuffphoto.com/2021/04/04/pass-labs-int-250-review/
"Luxman 590 AXII – Sweet, a little leaner than the Pass Labs with more detail so this is more for those who crave sharpness and detail over warmth and liquidity. Class A 30 watts but what it lacks in body compared to pass it makes up for in sweetness and dynamics. Made in Japan."
From the description, the Luxman appears to suit my system and preference more than the Pass Labs INT-250.
Link below.
https://www.stevehuffphoto.com/2021/04/04/pass-labs-int-250-review/
"Luxman 590 AXII – Sweet, a little leaner than the Pass Labs with more detail so this is more for those who crave sharpness and detail over warmth and liquidity. Class A 30 watts but what it lacks in body compared to pass it makes up for in sweetness and dynamics. Made in Japan."
From the description, the Luxman appears to suit my system and preference more than the Pass Labs INT-250.