Have NAD 3150, where can i get info on specs?

HI there, have this groovy inegrated amp, no idea of specs.
will NAD.com answer me? thanks madison wi
50 RMS wpc @8 ohms continuous, 100 wpc IHF on peaks. Dunno if I'd call it groovy, but my mother uses one to drive her Vandersteen 2A's. The turn-on delay relay has burned up (has been removed) and the spring clip speaker wire connectors are crappy, but the thing still works after 22 years.