What components might I check into that have a small foot print?

I am trying to set up a second system in some cube type shelving that is only 13 inches wide, and 15 inches deep. The hardest thing to accommodate is a CD player. My Fisher tube mono's will fit, and, the Cary SLP 90 preamp will also. Any other suggestions? Also, what if I (god forbid) decided to go solid state so that the system would be user friendly for others. What might I look for? Thank you in advance for any ideas.
Or if only wireless, use something like a netgear Ethernet extender with port to make that wired connection in your small space
Schiit, Peachtree, Cyrus Audio, Wyred 4 Sound, and a couple of offerings from PS Audio
Thank you all for your suggestions. I know I will have to (and really do want to) embrace digital streaming, but just not ready yet. 63 now and no kids in the house to help me through it. The calculator had not even been invented yet when I went through school. Sure, I can use the computer, but not so digitally inclined. Very satisfied with a really, really good analog set up and dinosaur CD's for now. No internet access in this property yet either. I had forgotten about McCormack's micro line. Nagra probably too pricey, Did not know the Rega player was so small, good idea. Also, I think now I do remember PS offering some smaller chassis units..I will check out most of your suggestions and see where it leads me. I am picky, so, if I go solid state, it better be very, very good. Reason I am even considering SS is that there will be times when visiting family will be using the house on their own.