I would get an NBS power cord. They are quite analytical and will mate with the 402 very well. I use one on my McIntosh C42 preamp and it's an awesome match. They have several models to choose from depending on your budget.
But there are MANY options out there. Best thing for you to do is buy several and see which you like most. If you buy them used, you won't lose any money and will end up with a true answer to your question.
Arthur
But there are MANY options out there. Best thing for you to do is buy several and see which you like most. If you buy them used, you won't lose any money and will end up with a true answer to your question.
Arthur