Luxman 590axii vs Pass Labs int 60

You might find this forum interesting (see below). The last page kind of touches upon your question but is talking about the Pass Lab 250 integrated amp. A long thread but worth looking at. The bottom line was the OP said that the speakers and speaker cables made a huge difference influencing the sound of all the integrated amps he listened to but he didn't realize it until the end of his search. 
With that said I'm sure you would like either the Pass Lab 60 which I, unfortunately, have not heard and you would also be as happy with the Luxman 590 AXII which I own and like. I wish I could describe the difference in sound between the two integrated units, but I don't can't.
If you don't get any responses to your exact question you could always contact a dealer that carries both and ask them.

@audiofound, I wish I could answer the first question you asked but I have not heard the Pass Lab 60 integrated as I already mentioned above.
I do own the Luxman 590 AXII and the Allnic-T 1500 which is a tubed 300B with 12.5 watts of class A. The Luxman sounds as tube-like as possible for a solid-state amp with more power as compared to the Allnic. 

My Luxman AX II gets warm to the touch but definitely not hot.