Bogen V150 8 Input Power Vector Amp - 150W

i bought this little amplifier and it's the one that i powered the speakers that are in my office claims to be 50 watts per channel into a four-ohm load so i thought i would bring out my gear and test it and see if that's actually true what do i got i got the oscilloscope i'm going to turn that on i've got the function generator i'm going to turn that on that's set to a one kilohertz sine wave um and it's zero to two volts peak-to-peak uh the little amplifier here is plugged into this little power brick and this is really the questionable part because i looked this up before i bought it and it's based on the uh i think it's the tpa 31 d if i remember that correctly it's amazing anyway so the chip is good but it's the power supply that they give with it that is questionable i mean you need the power to get the power out i've got the volume turned all the way up to max i don't know if thi