Why do tubed preamps image better than SS?

Tube pre's image better because of the dimension and presence they can offer that solid state has not been able to duplicate except for a handfull like Lamm (yes it is solid state-there is no tubes in the linestage) and Ayre k1x. These two image as well if not better than any tube preamp made at any price. But in general tubes do image better than solid state.

Having tube equipment improves your image in audiophile circles. But about the sound...the loudspeaker is far and away the most important contributor to imaging, good and bad.

No pre-amp images best of all...

generally speaking,tube amps seem to offer more 'front to back depth',while ss throws a larger soundstage... but in all honesty, speakers will make a bigger difference in 'realism' than your pre or power amp, provided the components are more than capable of driving them to their potential.

Mahandave
do you mean Lamm LL-2 or L-1 or L-2 or all of them ?