Ive had my CD72T for about 4 years now and am wanting to improve my music listening. Would it be worthwhile having the CD player upgraded to the 193, in the sense that, would there be a significant difference in the sound quality. Im looking for something that suits metal and classical and would work well with my rotel set-up. Any suggestions? I recently upgraded the mains cable to a Russ Andrews which ipmroved the sound no end but now I want a more significant improvement! Im greedy I know!