What stereo equipment do respected musicians listen to?

At one time John Lennon had a Sony Str 6055 Receiver. 

If musicians cared a little more about the sound it would be more enjoyable to visit their (amplified) concerts. 

Musicians can't afford the stuff we buy. All Their money goes to the next new and interesting guitar, amp, PA etc. Not to mention studio time, physical media production...beer. So many things. They are much more focused on making music themselves rather than passively reproducing it. 

Maybe if musicians heard a top-notch system they would stop playing and just listening..

not a hope….