I have not got the budget needed to purchase anything like the very best components. I have to look for the best value gear and this can be found at several different price points, each offering a step up in sound quality. So I study a lot to find out what is good value.
I learn from other audiophiles, from listening to their systems, finding out about their own upgrades, from talking to technicians, from online exchanges and reading, from dealers and from reviews. This, plus listening to music on my own gear, helps me to form an impression of my system's weaknesses and make a short list of worthwhile upgrades. Sometimes the list is a single item long.
I keep an eye on the gear for sale sites and when I see one of the pieces I've noted I go for it.
I learn from other audiophiles, from listening to their systems, finding out about their own upgrades, from talking to technicians, from online exchanges and reading, from dealers and from reviews. This, plus listening to music on my own gear, helps me to form an impression of my system's weaknesses and make a short list of worthwhile upgrades. Sometimes the list is a single item long.
I keep an eye on the gear for sale sites and when I see one of the pieces I've noted I go for it.