I'll tell ya what does make a difference: trueing the runout of CDs via an Audiodesk lathe.
There may be an explanation for this - power to adjust the laser tracking will be sinusoidal/periodic if the CD wobbles and the laser is constantly readjusting - to keep tracking.
If the power supply ioslation to the DAC is less than robust/adequate then this signal may affect jitter. Ed Meitner demonstrated years ago - that if you blasted a CD player with a speaker that you can get the CD's to resonate at around 1000 HZ - which then created feedback and jitter into the clock. Random jitter is ok - but precise periodic jitter of specific nature is MUCH more likely to become audible.
On the other hand - if you place your CD player inside a cabinet with a closed door and protect it from high frequencies then you should not have too much cause to worry about what Ed Meitner discovered.
The wobbly disc is another matter - as equipment designers can and should deal with this issue as laser readjustments will be periodic and related to disc rotation speed - in essence something that would be expected to happen. A DAC completely separated from the transport with a decent PLL algorithm that reduces jitter may help and the good news is that it will probably fix everything - whereas I have my doubts whether a lathe can be precise enough - those CD tracks are awful narrow...