You've been given good suggestions. Experiment with speaker placement, try some room treatments. Absorbion panels were able to move my soundstage forward and provide a 3D image.
You have a new preamp and tubes which need to break in, imaging and dynamics are usually the most noticeable change. You already know you'll be rolling the JJ's, ask for advice on tubes with the characteristics you're looking for. Brent Jessee is a very accessible dealer.
You have a new preamp and tubes which need to break in, imaging and dynamics are usually the most noticeable change. You already know you'll be rolling the JJ's, ask for advice on tubes with the characteristics you're looking for. Brent Jessee is a very accessible dealer.