If the source is terrible then nothing matters and the same is true for the speakers. That said I think the variance in speaker quality is more impactful than the source. I focus on speakers first. I have Sopra 3 speakers and they contribute the highest single cost of my 125k system. So as you can see there are many other contributions to the total. I have vinyl, CDs and streaming so this is a multiplier. Also cables make up about 22k of the system. It all matters. Then there is the influence of the room. If it is a bad room a lot of the effort will never pay off.
