If your 2 prong power cable is not indexed (one prong larger than the other so you cannot swap the Live/Neutral) then consider plugging it first and listening for any buzz or hum. There's always some at low levels, almost like a noise floor. Then turn it off and flip the power plug, repeat the test. If one orientation is quieter than the other then bingo! If not then it doesn't matter.
This usually applies for amps with phono inputs or separate phono preamps. I live in Malaysia (UK plug) so most of my equipment power plugs has been changed to UK so it won't be flipped.
This usually applies for amps with phono inputs or separate phono preamps. I live in Malaysia (UK plug) so most of my equipment power plugs has been changed to UK so it won't be flipped.