I think that you have a very nice rig and I hope that you are enjoying it. Since you don't mention power delivery at all, I will be an ass and assume that you have not attended to it. A Hubbell HI8300 outlet can be purchased for around $15.00 and will improve the sound over many older outlets. Likewise some modestly priced power cables would help, or better yet, build some yourself and save some money.
If you want to spend money on a component, the Marantz is what I would replace. Why? Electronic distortions are, to me much more irritating than the distortions in loudspeakers or analog gear, and having heard the Marantz, this is where I would start.
Good luck with the hunt and the quest, but most of all, enjoy your music on the way.
If you want to spend money on a component, the Marantz is what I would replace. Why? Electronic distortions are, to me much more irritating than the distortions in loudspeakers or analog gear, and having heard the Marantz, this is where I would start.
Good luck with the hunt and the quest, but most of all, enjoy your music on the way.

