I've owned three 6SN7 based preamps in the last five years. The Modwright LS-100, the current Don Sachs Model 2 and the current Supratek Chardonnay. Still have the Sachs and the Supratek. From purely a sound and musical involvement perspective the Supratek is the winner to my ears in my system with both SS and tube amps. The inclusion of both XLR and SE outputs plus the variable gain make it easy to match with a wide range of amps.
