TBH I dont know why the manufacturer is makeing a point about this, its being ginmmicky, almost all amps , even in cheap pocket radios and ghettoblasters use individual transisters on the ouput stage of the circuit, although some still use IC's
Now if they wanted to make a point they should replace the IC's in the preamp stage as well, but I doubt they have done this to save costs, Marantz replaced the IC's in the pre amp of the PM6003 with individual transistors and now we have the improved 6004,