As the owner of a MGS4 bundle machine, I can say with a degree of certainty that it comes with SACD playback (and 4 USB ports on the front.) Also, and FWIW, I have yet to find a PS2 or PS1 game that it will not play properly. Granted, I have not tried hundreds of games, but I have played some of the more rare titles like the first Klonoa for the PS1 without a hitch. So, although it is software emulation, it is fairly robust IMO.