Pass labs x260.8 versus xa160.8

Maybe this means nothing.

Yes maybe means nothing but seems that xa160.8 is not an amp keep for long-term [five or more years] and trying to figure out why 

Karmapolice,

I echo you inquiry! I have noticed far more Xa160.8 listed rather than the X260.8. Even historic sales/listings of X260.8 are extremely rare. I am in the market and considering both of these amps in addition to one of the Luxman integrateds. 

From my research, the X260.8 is stellar and a step above the venerable X250.8. I do not have a local dealer so an audition would be quite a challenge for me. 

What we don't know, and what Pass is unlikely to share with anyone, is just how many of each model has been sold in the marketplace. How many units are sold new often dictates how many are available on the used market more than buyers being satisfied or not.   

Also note that the Xa160.8 is a pure class A amp while the X260.8 is an AB unit. It could well be that, if one buys fully into the Pass philosphy, that a class A unit is the greater preference of buyers.   

So, there is a lot we don't know which means that our speculations are little more than naval gazing.