You can philosophize all you want, it just comes down to what you hear. I recently bought a tube headphone amp. It sounded nice, but a bit shrill. I started burning it in. Just 10 hours later, it sounded MARKEDLY better. Not subtle.
YMMV with other equipment, but I would ALWAYS break things in, just in case they need it. Some things definitely do!
YMMV with other equipment, but I would ALWAYS break things in, just in case they need it. Some things definitely do!