BAT VK-600 vs Pass XA100.5

I see you listed your Pass monos. Did you go BATty?

I did. :-)

and the results are?

Much better (to my ears).

In comparison, the Pass don't control the woofers of my Wilson Sophia 2's as well. The Pass is much warmer sounding and rolled off on top.

The Bat is a tad less smooth in the highs, but much more airy, the bass is tighter and more satisfying and overall tonal balance feels more correct.

YMMV.

07-08-10: Madfloyd
Much better (to my ears).

In comparison, the Pass don't control the woofers of my Wilson Sophia 2's as well. The Pass is much warmer sounding and rolled off on top.

It was well established in another post that there was an improper preamp match with the Pass Labs amps in Madfloyd's system. The preamp he used had a very high output impedance of over 2k ohms. Therefore, what he heard in his system was not the fault of the Pass Labs amplifiers, but with a poor impedance match.

I imagine one will be hard pressed to find another person who hears Pass Labs XA-.5 series amps as being rolled off on top and not in control of the bass when the amps are matched with an appropriate preamp (not hard to do).