Best Stereo Upgrade Value


A question for you audiophiles...

What "upgrade/change" has singularly given you the biggest (not incremental) improvement to your stereo system?  Upgraded amp, pre-amp, tubes, room correction unit, subs, connectors, cables, speakers, streamer, stylus, speaker placement, acoustic panels, etc.?

bheyamoto

everything matters. great speakers will not make a poor source or amplification sound good, but great source and amplification will get the most out of decent speakers. Which is better? I once placed my $15k Shindo system in my bedroom setup with $500 speakers and it sounded great, the $1,200 bedroom system with my main system speakers accurately articulated the upstream deficiencies.