Yup, burn-in does improve things. Ask John Chapman (if he's around), this thing respond to burn-in than any other gear from his experience. Remember, there are 2 transformers and lots of wires inside. Also your binding post, selector switches, and volume control needs burn in. If you are impressed on what you are hearing now, after 200 hours, you'll be always smiling. The sound will be more refined, smoother, bigger and punchier bass and well defined highs. Vocals will be more focused, and I guess the position of players relative to each other (imaging) are well deliniated as well. In time, my friend, in time. Happy listening.