What stereo equipment do respected musicians listen to?

Musicians do not have any insider secrets for home audio, you may as well ask a lawyer what their system is, you might get a more informed answer. 

@tony1954 - when I first saw the title of this thread, my first thought was 'Henry Rollins' - he's a big-time audiophile! 

I'm one and my system is rather good, thank you.

ATC Speakers. Musical, and truthful.

In general musicians have a completely different mind set and emphasis when listening to recorded music. They are so involved in the creation… the notes, the relationship, the performance that fidelity is an afterthought. There are exceptions… like Neal Young and others, the 1%ers, like we are.