great question , but its all important garbage in garbage out so a good front end is important, the right speakers are also just as important they all sound different in my room anyway , room acoustics very important or your never get the best out of any component, a better quality sounding amplifier can make a huge difference to sound quality ie going from a good ss to a great valve or vacuum tube amp is an incredible experience ,also trying a passive pre amp can be incredible also but im going with the front end as the man behind linn said garbage in garbage out , another wise man once said you cant polish s**t