$10000.00 is a lot of money but it may not be enough for what you want.If you like really great bass stay away from tube amplifiers in this price range(at least if you want a new one).I would try to improve the sound(including the bass) with right cables.Rowlands like Cardas cables.Try Cardas Golden Cross or Cardas Golden Reference to connect you player and the Concentra and Cardas Neutral Reference speaker cables.Siltech silver cables might also work well.If that is not enough then you need more power or more expensive ProAcs(or both).Also,don't forget about power cords.Generally,I would choose Jeff Rowland's amplifier any day.ProAcs should be adequate too.
Advise Needed for Speakers and Amplifier
I have $8,000 to 10,000 budgeted for speakers and an integrated amplifier (to keep cost low). The equipment selected will be used with a BAT VK-D5 CD Player. I have listened to the Jeff Rowland Integrated amp and the ProAc 2.5 speaker. This combination is very good except the base seems limited. Another speaker is the Dynaudio Contour 3.0 (sounds very good) with either the Krell KAV-500i Remote Control Integrated Amplifier or the new The Mark Levinson No383 Integrated amplifier due out sometime in November. Comments and suggestions are requested. Thanks