I try to balance consumption-based hobbies, like audiophilia, with creation-based hobbies, like woodworking. Usually the remedy for obsession and burn out in one is picking the other back up. The cycles usually last several months, and there's always something to do.
Our time on this planet is short and I see no harm in being obsessed with things that bring joy and a sense of personal enrichment--within reason. If you're not stealing from your kids' plates and futures, neglecting your wife, and mortgaging your house for audio equipment that costs more than it, knock yourself out. If you are, stop.