Would like to know your opinions regarding the Avondale Graduation One preamp and the A260z Twin channel poweramp. How does it compare to a Naim 252/SC2/300? It is a fraction of the price, but we all know the Naim is a commercial built and sold through dealers. However, maybe a fairer comparison would be the 52/SC/250. These amps will be fed by my Meridian 206, Rega 25/17D2/Tom Evans Microgroove+, and a newly built RME (studio sound card) home entertainment / DVD computer system. Who's done the comparison?