2. amps-preamps
  3. 1036370656

Class A and B differences?

I have been auditioning the Pass Labs X-250 amp along with the Spectron Digital amp versus my Kinergetics KBA-75 power amp. My system consists of a Sony SCD-777ES, BAT VK-30SE preamp, B&W 803 matrix series II speakers, Acoustic Zen silver ref. ICs, Hologram speaker cables, JPS digital AC and power AC cords along with an Audience power AC cord. I hear the differences between the amps but I was expecting to hear larger differences, like a WOW what have I been missing. The Pass has more detail and seperation but maybe 10% max 15%. Is that the difference between a class A rated amp and a class B rated amp? Or is my Sony CD player or B&W speakers not up to the Pass amp capabilities?

Your comments are appreciated.
bigkidz

Showing 1 response by sean

sean
6,231 posts
 
Have you been leaving the Pass amp fired up 24 / 7 ? If not, try doing that and see what you think of it. Give it three days of "steady AC burn" before really giving it a good listen. Things may settle even more after that point, but they will be very gradual and take an extended period of time. The 72 hour "settling period" will give you a good idea of what the amp sounds like with the rest of your system. Sean
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