My first playing test of my Republic Duolian in Tarnished Nickel Finish over its bell-brass body is pleasurable in that the guitar sounds really good both acoustically and plugged into my UltraSound AG30, and in that the guitar is set up quite well with darn good craftsmanship.
The amplified tone from the Republic Guitars-installed Schatten NR2 is noise-free and sounds surprisingly full and quite well-balanced string-to-string in its output and tone. I'm routing the Schatten's passive output through my new Sarno Steel Guitar Black Box Tube Preamp and that likely accounts for some of the warmth and roundness of amplified tone. The Vari-Z variable impedance knob of the SGBB acts to find the sweet spot impedance for the pickup and also acts as a kind of volume control as the more the knob is turned toward the higher impedance end of its travel the more there is a noticeable volume increase along with the increasing fullness of tone. I've found the most pleasing tone is at the 1 Megaohm end of the knob. I also have an LR Baggs Session DI that I'll try the Schatten through to hear what that can do for its amplified tone.
Photos of Republic Duolian including one of the Schatten NR-2 Biscuit Bridge Piezo Pickup