While in upstate NY I got the opportunity to listen to a norah jones LP on Harbeths with a Gerrard 301, all-tube mono blocks, and a McIntosh pre ... Crazy intimate breathy vocals and natural woody sounding cello/acoustic guitar/acoustic bass, and ext. Very realistic, and leaning toward the smoother side of things from what I remember. Quite good in every way.
Oh and the guy had a BARN FULL of NIB vintage stereo gear. No exaggeration, it was insane.