so actually i've built digital signal processing software :) the argument becomes a little nuanced at this level -- we should define what we mean by "quality".. and i think the explanation for "why/how" the sound is affected in the digital vs analog case is quite interesting for anyone with the time to explicate! that said, agree my choice of words was too strong. really just mean as far as what is accessible for an average listener, there is no comparison to the simple analog control of a vinyl record.