I have been living with the MX-R mono blocks for almost two years. During that time period I have had some friends drop by to listen to them...bringing along their amps...I remain very happy with them...I am not sure how they make "poor CDs" sound better...not sure that they do...but I would describe one of their strengths as being very musical...and one of the most endearing qualities...is their ability to provide extremely low noise floor...which enhances their ability to handle low level detail...which is one trait that most amps fail at...but is important to me when listening to music...mostly classical and jazz...small groups...I think in setting them it is very beneficial to use short speaker cables...mine are 18" from amp to the Rockport speakers...
John
John