Sounds like you should go back for another listen.
Have not heard the integrated version, but the XA.5 series will have a harmonic richness and depth in the midrange that I have not heard in any other solid state amp. And yet, it gives-up nothing to natural detail. It is not hyper-detailed. I would say the Pass sound is more 'colored', potentially in a positive way.
That said, I would consider going with separates so you can have the option of using the Pass preamp or a tubed preamp. Greater flexibility in the long run.
Have not heard the integrated version, but the XA.5 series will have a harmonic richness and depth in the midrange that I have not heard in any other solid state amp. And yet, it gives-up nothing to natural detail. It is not hyper-detailed. I would say the Pass sound is more 'colored', potentially in a positive way.
That said, I would consider going with separates so you can have the option of using the Pass preamp or a tubed preamp. Greater flexibility in the long run.