Pass Labs XA- ".5" ???


Is this true?
gandme
Audphile 1, I had helped my friend put together his system so each piece, CDP, preamp, speakers, and all wiring I'm very intimate with regarding their sonic signature, and the XA.5 amp in his system sounded no different then my XA-100's as far as I could tell.
I replaced my XA100 with XA100.5 a month ago, and find them to be better amplifiers. They have much more control in the bass, are more detailed, and more dynamic. They are still very easy to listen to, but have more "jump" effect when needed. My speakers are Kharma Exquisite Mini MK2. I still think that the XA series are some of the best I have heard, but the XA.5 are superior amplifiers.
leffe, before upgrading did you feel that your xa100 was lacking in power? Your speakers are pretty efficient (89db)with a nominal impedance of 8 ohms. Do you think the "jump" has to do with the new amps being able to increase power as the impedance drops? Do you listen to music very loud?