I agree if you have Polk or bose speakers don't bother buyin Classé SSP-800 on the other hand if you have B&W 800 series or Focal Grand Utopia or any high end speakers then you will hear a difference. Now an other option I have seriously consider when I change my system in ten years or so I will look at what they use in recording studios around the world Genelec powered speakers and DSP controled then all you need is a good transport like the Oppo and you are free of pre/pro and amps
Of course Abbey Road uses B&W 800D and Classé CA-M400 ( owned by B&W) but that is because they want to support the locals
http://www.abbeyroad.co.uk/studios/studio1/
Five 800D bi-amped with two Classé CA-400 monobloks each
http://www.abbeyroad.co.uk/studios/penthouse/