This morning the timbre and soundstage is unlike I've ever heard from this chair. For a year at least I had two filters fighting each other squashing my tunes!
You went for a year without noticing? What changed this morning? maybe you listened more intently to the music? It sounds like you expect to be perfect. So 2 filters were wrong. But you had enjoyed the music for a year before you noticed anything wrong? My point is that you apparently enjoyed the music for a year. And isn't that what this "hobby" is about?