b59burst, that's interesting because in my system the W-5 emphasized the lowest octave a bit more than the second and third. I think you should try a couple other amps in your system just to put this to rest. I've not listened to the Pass X-250, but I have been told that it is a bit warmer and less extended up top than the W-5. The X-250 may have more warmth but I would be shocked if it has more control than the W-5. Let us know what you think if you get to audition it for yourself.
