help wanted

parasound amp 2125 dynavector pre amp dvp999es cd/dvd player audio quest vdm3 digital cable kimber speaker cable audio quest diamond inter connects(xdacv3,x-10 buffer,xpsu musical fidelity)not much diffrence between running dvp999es and musical fidelity gear wich cost$2000au.can anyone suggest why for so much more money musical fidelity does not stack up i would not recommend it not woth it.any suggestions why the performance is so low from the xdacv3 compared to a cd/dvd player worth$2499AU