Mods in Tube players: list in order

From observation, most basic mods of any kind, whether tube or not, begin with power supply improvements and capacitor upgrades, and progress from there.

I'd agree with Tvad; I'd add that after the power supplies, the analog section should get the first attention.

Agree with Tvad & Rcprince, plus a good set of isolation footers under the chassis.

Have had same argument with freidn who is amzed that Music Fidelity's best seller is a tueb bufer.Tube should in his mind (and I agree) used in cicut design not adding "artifacts" which is what you do essentially asdding upper harmonic distortion which we find pleasing as opposed to first order or lower harmonic distortion which we call"distortion".I read interestesting interview in Stereophile a while back with head designer of Pathos who say's in amplification (I think I have this right) hybrid is a great way to go because tubes do a good job at chaninging voltage and ad a nice warmth but solid state does a beter job in handling output because it has bettter control of bass than all tube designs and it's highs do not roll off the way they do with tubes.Made sense and i wonder why not more manufaturers make hybrids.But of course morefolks use tubes in preamp then power amp prefering SS for it's control.I know some folks who reverse it I guess it depends on attributes of pieces and how "dirty" you want sound.But adding a tube in a CD player may sweeten sound nontheless.I just agree with others it's less important then power supplies,caps,fast diodes etc in geting you clean undistorted sound.
Chazzbo