if there is a preamp that brings out some very unique and/or special performance gains with the APL, the chances are probably pretty good that the exact same or similar preamp could also equally benefit the Esoteric.
The brand and circuit in the preamp (tubes, no tubes, etc) makes a significant difference, but I won't beat the dead horse as my point was not to debate your opinion of the Esoteric versus the APL, but to highlight the effects of a preamp on the APL. Perhaps the NuForce preamp didn't do it, but the First Sound Presence Deluxe II, Modwright SWL9.0SE and Lamm LL2 Deluxe all made a significant contribution to the sound of the APL in my system. Two audiophile buddies heard the same comparisons and agreed. A friend who owns the Lamm LL2 concurs as well.
Nevertheless, I'm sure what you hear with the Esoteric is the truth in your rig, and I'm glad you have made a nice discovery. Congratulations, and good listening.
