Assuming your TT is still on a wall mount and that you don't have a CD spinner I suspect that you are fine as is as long as the racks's spikes/footers are rigidly secured.
Curious though as to how the shelves are secured/joined to the uprights/legs (my vision isn't that great and I could not tell from the pic).
I use specialty shelves for my TT and CD deck, but my tube amps/preamp do not seem to benefit much, if @ all, from special footers from past experimentation.
Love the look of exposed edge plywood, and its a great looking build, IMO.
This said, I would experiment briefly with spiking the rack directly to the wood floor if possible.
If it doesn't change/better/worsen the sound you will only be left with 4 tiny holes, but then you will know.
DeKay
Curious though as to how the shelves are secured/joined to the uprights/legs (my vision isn't that great and I could not tell from the pic).
I use specialty shelves for my TT and CD deck, but my tube amps/preamp do not seem to benefit much, if @ all, from special footers from past experimentation.
Love the look of exposed edge plywood, and its a great looking build, IMO.
This said, I would experiment briefly with spiking the rack directly to the wood floor if possible.
If it doesn't change/better/worsen the sound you will only be left with 4 tiny holes, but then you will know.
DeKay