Does remote control degrade the sound of tube preamps?

@mapman 

Now what other impractical issues can we all worry about?

haha - well said... never underestimate the degree of audiophile ocd, er, curiosity...

@atmasphere Does this mean that MP3 does not have motorized volume control?

 "...the quality is entirely dependent on the quality of the potentiometer, not on the motor whose only job is to twist the shaft just as your hand would also do."

                                                     Plus one!

To be clear, adding remote control functionality to volume control does not degrade sound, but, if providing that feature means cost cutting on some other aspect of product, that could hurt the sound quality.  If providing remote volume control means going with an inferior potentiometer that has a motor built into it, instead of a superior manual potentiometer, that would hurt the sound.  I have a $1,000 Alps RK 50 manual potentiometer in my headphone amp.  If a builder wants a motorized version, the builder would have to engineer this and modify the potentiometer at considerable cost to so do.  That means it is "possible" to get that level of quality, but it might not be that practical.  

 Does this mean that MP3 does not have motorized volume control?

@chungjh It has a motorized control too.