I compared both in my system and currently have int-250.
Even so the sound signature is the same, the INT-250 is more extended at top and bottom and deliver more relaxed presentation with slightly bigger soundstage than INT-60. Read reputable and honest (for me) review from guys at audiodrom. The INT-250 got very high score of 92 out of 100 and their comments are spot on. I tried many integrated including plinius histo, gamut 150le, luxman 509x, mark levinson, gryphon diablo 300, vitus 100 and to my ears and in my system the pass int-250 was one of the best, loosing some attributes like dynamic swings and on some recordings micro details to gryphon diablo-300. If you get one you have to get a great power cables and speaker cables that synergetic with this pass in order to hear what it is capable of.
Even so the sound signature is the same, the INT-250 is more extended at top and bottom and deliver more relaxed presentation with slightly bigger soundstage than INT-60. Read reputable and honest (for me) review from guys at audiodrom. The INT-250 got very high score of 92 out of 100 and their comments are spot on. I tried many integrated including plinius histo, gamut 150le, luxman 509x, mark levinson, gryphon diablo 300, vitus 100 and to my ears and in my system the pass int-250 was one of the best, loosing some attributes like dynamic swings and on some recordings micro details to gryphon diablo-300. If you get one you have to get a great power cables and speaker cables that synergetic with this pass in order to hear what it is capable of.