X250.5 vs X250.8


Has any one compared these two amps. Also has anyone compared the X1 preamp with the X22 preamp? I have an X1 and an X250.5 and they do sound quite nice with my Hales T5’s but I’m wondering what about the newer Pass Labs gear? My 16+ year old amp and preamp sound good but will the new stuff be that much nicer?  I recently upgraded my dac from a Perfectwave Mk2 to a Directstream and the improvement is obvious and dramatic. Any advice would be appreciated.
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As my system is sounding good with digital upgrade and power cable upgrade and with further cable upgrade to follow in a few days I decided not to change my amp and as the XP22 does not do balanced tape outputs necessary for my balanced headphone amp setup I decided to leave my electronics alone.My X1 and X250.5 sound quite nice just the same.
Tomorrow I expect my new XP-32 preamp and in a couple of weeks I expect my new X250.8. It’s funny but as I wait my new electronics my X1 and X250.5 combo have been sounding very good. I’ve actually been loosing sleep from excitement. In these crazy times people have been getting puppies and stereo systems.
I’ve been listening to my new XP-32 for hours now and it keeps sounding better as it is warming up. At 3 in the morning I am listening to my headphones which I did not expect to sound this much better but they do. The X1 is a good preamp but the XP-32 is amazing. In a couple of weeks I will have my new X250.8 which will be nice but the X250.5 is no slouch. I think I have pretty much reached endgame. My Hales Transcendence 5 speakers are the last original component in my system but they are worth keeping.