I just took delivery on a pair of XA160.8, which replaced XA160.5. I thought I would keep my 160.5's for ever, they were incredible sounding. The tamber and tone were so correct and musical. Then along came the 160.8, the first thing that came out of my mouth was holy shit! The .8's are soooo transparent that it actually threw me. I actually started hearing subtle things on favorite CD's that I don't remember hearing before. They present glorious sound that is so open and huge. The highs are more extended and delicate and the base is so detailed and powerful. Yes I am smitten with these amps. Now I have to listen to my entire collection all over gain. And to think they aren't even broken in yet. I actually think that the .8 series is a quantum leap forward for Pass Labs. Job well done
Richard